CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
supported by the sibling associations ACADIA, CAADRIA, eCAADe, SIGraDi, ASCAAD and CAAD futures

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_id 028f
authors Reggini, Horacio C.
year 1976
title A Generalized Perspective Involving Visual Size Constancy
source Estudos Cognitivos. San-Paulo, Argentine: December, 1976. vol. 1: pp. [71]-101 : ill. Written in spanish. --- includes bibliography
summary This article deals with a new idea for generating plane representation figures of three dimensional objects and describes a corresponding computer program. Instead of using the classical perspective rules that govern retinal images as well as common cameras, a different projection method is elaborated based upon the use of a particular kind of curved projection rays instead of the usual straight ones. Curvature of projection lines is made depending on an index variable between zero and one. Meanwhile conical and parallel classical images are obtained for the limit values, compromise images result with intermediate values. Fundamentals, analytical procedure and program for displaying images are presented. Finally, examples are shown and the development possibility of a new type of camera with the property of producing pictures according to different indexes is raised
keywords computer graphics, perspective, rendering, systems
series CADline
last changed 2003/06/02 13:58

_id b0e7
authors Ahmad Rafi, M.E. and Karboulonis, P.
year 2000
title The Re-Convergence of Art and Science: A Vehicle for Creativity
source CAADRIA 2000 [Proceedings of the Fifth Conference on Computer Aided Architectural Design Research in Asia / ISBN 981-04-2491-4] Singapore 18-19 May 2000, pp. 491-500
doi https://doi.org/10.52842/conf.caadria.2000.491
summary Ever-increasing complexity in product design and the need to deliver a cost-effective solution that benefits from a dynamic approach requires the employment and adoption of innovative design methods which ensure that products are of the highest quality and meet or exceed customers' expectations. According to Bronowski (1976) science and art were originally two faces of the same human creativity. However, as civilisation advances and works became specialised, the dichotomy of science and art gradually became apparent. Hence scientists and artists were born, and began to develop work that was polar opposite. The sense of beauty itself became separated from science and was confined within the field of art. This dichotomy existed through mankind's efforts in advancing civilisation to its present state. This paper briefly examines the relationship between art and science through the ages and discusses their relatively recent re-convergence. Based on this hypothesis, this paper studies the current state of the convergence between arts and sciences and examines the current relationship between the two by considering real world applications and products. The study of such products and their successes and impact they had in the marketplace due to their designs and aesthetics rather than their advanced technology that had partially failed them appears to support this argument. This text further argues that a re-convergence between art and science is currently occurring and highlights the need for accelerating this process. It is suggested that re-convergence is a result of new technologies which are adopted by practitioners that include effective visualisation and communication of ideas and concepts. Such elements are widely found today in multimedia and Virtual Environments (VEs) where such tools offer increased power and new abilities to both scientists and designers as both venture in each other's domains. This paper highlights the need for the employment of emerging computer based real-time interactive technologies that are expected to enhance the design process through real-time prototyping and visualisation, better decision-making, higher quality communication and collaboration, lessor error and reduced design cycles. Effective employment and adoption of innovative design methods that ensure products are delivered on time, and within budget, are of the highest quality and meet customer expectations are becoming of ever increasing importance. Such tools and concepts are outlined and their roles in the industries they currently serve are identified. Case studies from differing fields are also studied. It is also suggested that Virtual Reality interfaces should be used and given access to Computer Aided Design (CAD) model information and data so that users may interrogate virtual models for additional information and functionality. Adoption and appliance of such integrated technologies over the Internet and their relevance to electronic commerce is also discussed. Finally, emerging software and hardware technologies are outlined and case studies from the architecture, electronic games, and retail industries among others are discussed, the benefits are subsequently put forward to support the argument. The requirements for adopting such technologies in financial, skills required and process management terms are also considered and outlined.
series CAADRIA
email
last changed 2022/06/07 07:54

_id 8f1d
authors Herot, C.
year 1976
title Graphical Input Through Machine Recognition of Sketches
source Computer Graphics, SIGGRAPH Quarterly Report, Vol. 10, No. 2
summary A family of programs has been developed to allow graphical input through continuous digitizing. Drawing data, sampled at a high and constant rate, is compressed and mapped into lines and splines, in two and three dimensions. This is achieved by inferring a particular user's intentions from measures of speed and pressure.Recent experiments have shown that even the most basic inference making cannot rely solely upon knowledge of the user's drawing style, but needs additional knowledge of the subject being drawn, the protocols of its domain, and the stage of development of the user's design. This requirement implies a higher level of machine intelligence than currently exists. An alternate approach is to increase the user's involvement in the recognition process.Contrary to previous efforts to move from sketch to mechanical drawing without human intervention, this paper reports on an interactive system for graphical input in which the user overtly partakes in training the machine and massaging the data at all levels of interpretation. The initial routines for data compression employ parallel functions for extracting such features as bentness, straightness, and endness. These are planned for implementation in microprocessors.Results offer a system for rapid (and enjoyable) graphical input with real-time interpretation, the beginnings of an intelligent tablet.
series report
last changed 2003/04/23 15:50

_id fb37
authors Knight, T.
year 1999
title Applications in architectural design and education and practice
source Report for the NSF/MIT Workshop on Shape Computation, Cambridge, Mass., 25-26 April 1999
summary Shortly after shape grammars were invented by Stiny and Gips, a two part project for shape grammars was outlined by Stiny. In a 1976 paper,1 Stiny described "two exercises in formal composition". These simple exercises became the foundation for the many applications of shape grammars that followed, and suggested the potential of such applications in education and practice. The first exercise showed how shape grammars could be used in original composition, that is, the creation of new design languages or styles from scratch. The second exercise showed how shape grammars could be used to analyze known or existing design languages. Both exercises illustrated the unique characteristics of the shape grammar formalism that helped motivate a quarter century (almost!) of shape grammar work. General but simple, formal yet intuitive: qualities that continue to make shape grammar disciples and confound skeptics. The history of shape grammar applications in architecture and the arts for the two complementary purposes of synthesis and analysis, as well as for a third, joint purpose is sketched in the first section of this report. These three categories of applications do not have rigid boundaries. They are used in this report mostly as a framework for discussion. An overview of the roles of shape grammar applications in education and practice is given in the second section. New and ongoing issues concerning shape grammars in education and practice are discussed in the last section.
series report
last changed 2003/04/23 15:50

_id 407caadria2004
id 407caadria2004
authors Larry Sass
year 2004
title Rapid Prototyping Techniques for Building Program Study
source CAADRIA 2004 [Proceedings of the 9th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 89-7141-648-3] Seoul Korea 28-30 April 2004, pp. 655-670
doi https://doi.org/10.52842/conf.caadria.2004.655
summary This paper is original research that demonstrates new design possibilities for evaluation in the schematic phase of design through the use rapid prototyping as a tool of representation verses 2D drawing. These program shapes are created from CAD files using a threedimensional printing and laser cutting CAM tools. This way of working is in response to two dimensional plan representation and evaluation (Mitchell 1976). This research combines the best of the visual aspects of plan representation and the formal representation of solid block modeling. The models in this paper demonstrate the building’s physical scale of spaces, building use and overall form. Resulting models will demonstrate a new way of designing in CAD one that combined physical and visual ways or representation.
series CAADRIA
email
last changed 2022/06/07 07:52

_id c7e0
id c7e0
authors Maria Gabriela Caffarena Celani
year 2002
title BEYOND ANALYSIS AND REPRESENTATION IN CAD: A NEW COMPUTATIONAL APPROACH TO DESIGN EDUCATION
source Submitted to the Department of Architecture in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the field of Architecture: Design & Computation at the Massachusetts Institute of Technology
summary This thesis aims at changing students' attitude towards the use of computer-aided design (CAD) in architecture. It starts from the premise that CAD is used mostly for analysis and representation, and not as a real design aide, and that architecture students have a bias against learning computer programming. For this purpose, a prototypical instruction system that mixes computer-aided design and computational design theory was developed, based on a series of fundamental concepts that are common to both fields. This system was influenced by Mitchell's (1987) The Art of Computer Graphics Programming and Stiny's (1976) shape grammars. Despite being based on solid theoretical foundations, CAD has progressively become an exclusively practical tool, since its origins in the 50's and 60's, while computational design theories have been mostly restricted to the academic circles. This thesis proposes an inversion in the present situation: the study of CAD theory, and the application of computational design into practice. The system proposed provides a conceptual framework that can be adapted to different circumstances, including course formats and resources, as well as students' background and technical training. It is based on seven fundamental concepts from computational design theories that are also important to the study of shape grammars: symmetry, recursion, rule-based compositions, parameterization of shapes, generative systems, algorithmization of design procedures, and shape emergence. These concepts are introduced within a CAD context, where their practical implementation and experimentation are possible, focusing the understanding of the computational nature of design. During this research, the proposed system was tested in two case studies with students from schools that had contrary orientations in terms of the importance of CAD in the architectural curriculum. In these experimental courses, students' activities evolved from using a commercial CAD tool in an innovative way, to the use of programming techniques for creating meaningful tools. Despite not having a statistical reach, the fieldwork allowed drawing preliminary conclusions about the proposed system's efficacy, since virtually all the students reported changing their understanding of the role of CAD in architecture, while some also acknowledged a conceptual influence in other subjects and in the way they see architecture.
keywords Symmetry
series thesis:PhD
type normal paper
email
more http://www.fec.unicamp.br/~celani/
last changed 2004/11/17 20:51

_id caadria2009_026
id caadria2009_026
authors Ostwald, Michael J.; Josephine Vaughan
year 2009
title Calculating Visual Complexity In Peter Eisenman’s Architecture
source Proceedings of the 14th International Conference on Computer Aided Architectural Design Research in Asia / Yunlin (Taiwan) 22-25 April 2009, pp. 75-84
doi https://doi.org/10.52842/conf.caadria.2009.075
summary This paper describes the results of the first computational investigation of characteristic visual complexity in the architecture of Peter Eisenman. The research uses a variation of the “box-counting” approach to determining a quantitative value of the formal complexity present in five of Eisenman’s early domestic works (Houses I, II, III, IV and VI all of which were completed between 1968 and 1976). The boxcounting approach produces an approximate fractal dimension calculation for the visual complexity of an architectural elevation. This method has previously been used to analyse a range of historic and modern buildings including the works of Frank Lloyd Wright, Eileen Gray, Le Corbusier and Kazuyo Sejima. Peter Eisenman’s early house designs–important precursors to his later Deconstructivist works–are widely regarded as possessing a high degree of formal consistency and a reasonably high level of visual complexity. Through this analysis it is possible to quantify both the visual complexity and the degree of consistency present in this work for the first time.
keywords Computational analysis; fractal dimension; box-counting; Peter Eisenman
series CAADRIA
email
last changed 2022/06/07 08:00

_id sigradi2004_200
id sigradi2004_200
authors Rodrigo Cury Paraizo
year 2004
title A representação do patrimônio urbano em hiperdocumentos: um estudo sobre o palácio monroe [The Representation of Urban Heritage in Hyperdocuments: A Study on the Monroe Palace]
source SIGraDi 2004 - [Proceedings of the 8th Iberoamerican Congress of Digital Graphics] Porte Alegre - Brasil 10-12 november 2004
summary This paper discusses the use of hyperdocuments to portray urban heritage, focusing in the possibilities of narrative structure brought by electronic network narrative. The chosen building is the former house of the Brazilian Senate, the Monroe Palace, for even after being demolished in 1976, is still somehow present as heritage. It also aims to develop a hyperdocument system of recombinatory pieces that allow for individual layouts that can be stored, retrieved and shared among users.
keywords Virtual heritage; Hyperdocuments, Saint Louis Brazilian Pavilion, Cinelândia, Downtown Rio
series SIGRADI
email
last changed 2016/03/10 09:59

_id 020e
authors Wade, John W. and Baur, J. Scott
year 1989
title Evaluation According to a Metric for Visual Order
source December 1989. 18 p. includes bibliography
summary Varying degrees of stimulus in the environment are appropriate to different tasks, so a uniform level of order in design cannot account for the many activities that will take place in a building. An ability to measure the visual order in a scene would facilitate the evaluation of design proposals. The designer could apply such a measure to establish a preferred level of order for a particular activity. A measure of order would also make possible the evaluation of the finished building product in terms of its use and in terms of any explicit goals of the designer. This paper describes a group of hypotheses proposed by Wade in a 1976 paper intended to develop a metric for visual order. It then examines the available literature to include other research that relates to this topic. It brings the earlier hypotheses up to date, outlines a strategy for testing those hypotheses, and proposes to develop the metric using computer image processing techniques. It also describes the methods that will be applied to validate the metric against the order that people perceive in the environment. To establish an objective standard for order, the metric that assesses the order will address only the features and attributes specific to scene. Thus, the measure will depend on neither the semantic content nor the figural properties of the field. The hypotheses under investigation are: (1) That visual order is related to the number of potential figure-ground shifts present in a visual field; (2) that the number of figure- ground shifts is dependent on the degree of articulation of the field; (3) that the number of figure-ground shifts is dependent on the distribution of color in the visual field; and (4) that the number of figure-ground shifts is dependent on the structure of the visual field. The various components of these elements are also detailed. From this, the designer will be able to determine which components of a design possess the appropriate level of order for a given task and which do not. The direct application of these principles will be explored in the design studio
keywords evaluation, analysis, aesthetics, form
series CADline
last changed 2003/06/02 13:58

_id aa83
authors Aho, Alfred V., Hopcroft , John E. and Ullman, Jeffrey D.
year 1976
title The Design and Analysis of Computer Algorithms
source x, 470 p. : ill Reading, Massachusetts: Addison-Weslely Pub. Co., 1976. includes bibliography: p. [452]-462 and index.
summary A text book for a first course in design and analysis of algorithms. The emphasis is on ideas and ease of understanding rather then on implementation details or programming tricks. It starts with formulating several models that include random access register machine, random access stored program machine and variants of these, so one can establish analytical results and at the same time accurately reflect on the salient features of real machines
keywords algorithms, programming
series CADline
last changed 2003/06/02 13:58

_id 186e
authors Blinn, J.F. and Newell, M.E.
year 1976
title Texture and Reflection in Computer Generated Images
source Communications of the ACM 19 10 542-547
summary In 1974 Catmull developed a new algorithm for rendering images of bivariate surface patches. This paper describes extensions of this algorithm in the areas of texture simulation and lighting models. The parametrization of a patch defines a coordinate system which is used as a key for mapping patterns onto the surface. The intensity of the pattern at each picture element is computed as a weighted average of regions of the pattern definition function. The shape and size of this weighting function are chosen using digital signal processing theory. The patch rendering algorithm allows accurate computation of the surface normal to the patch at each picture element, permitting the simulation of mirror reflections. The amount of light coming from a given direction is modeled in a similar manner to the texture mapping and then added to the intensity obtained from the texture mapping. Several examples of images synthesized using these new techniques are included.
series journal paper
last changed 2003/11/21 15:16

_id 62c4
authors Blinn, James F. and Newell, Martin E.
year 1976
title Texture and Reflection in Computer Generated Images
source communications of the ACM October, 1976. vol. 19: pp. 542-547 : ill. (col.). includes bibliography.
summary In 1974 Catmull developed a new algorithm for rendering images of bivariate surface patches. This paper describes extensions of this algorithm in the areas of texture simulation and lighting models. The parametrization of a patch defines a coordinate system which is used as a key for mapping patterns onto the surface. The intensity of the pattern at each picture element is computed as a weighted average of regions of the pattern definition function. The shape and size of this weighting function are chosen using digital signal processing theory. The patch rendering algorithm allows accurate computation of the surface normal to the patch at each picture element, permitting the simulation of mirror reflections. The amount of light coming from a given direction is modeled in a similar manner to the texture mapping and then added to the intensity obtained from the texture mapping. Several examples of images synthesized using these new techniques are included
keywords algorithms, computer graphics, shading, hidden surfaces, texture mapping, curved surfaces, rendering
series CADline
last changed 2003/06/02 13:58

_id ecaade2014_113
id ecaade2014_113
authors Burak Pak and Johan Verbeke
year 2014
title ICT-enabled Civic Empowerment and Participation: in Design, through Design
source Thompson, Emine Mine (ed.), Fusion - Proceedings of the 32nd eCAADe Conference - Volume 1, Department of Architecture and Built Environment, Faculty of Engineering and Environment, Newcastle upon Tyne, England, UK, 10-12 September 2014, pp. 89-97
doi https://doi.org/10.52842/conf.ecaade.2014.1.089
wos WOS:000361384700008
summary This paper aims to discuss the potentials of novel modes of participatory design in relation to the latest developments in Information and Communication Technologies (ICT). The first part of the study involves the extraction of the basic principles from the extraordinary cases of the Medical Faculty Housing by Lucien Kroll (1976) and Cedric Price's Fun Place (1965) in which various forms of ICT-enabled participation were conceived. In the second part, we reframe the existing ICT tools and strategies and elaborate their potentials to support the modes of participation performed in these two cases. As a result, by distilling the created knowledge, we introduce a model of ICT-enabled design participation which exploits a set of collective action tools to support sustainable ways of self-organization and bottom-up design.
keywords Participatory architectural design; crowdsourcing; crowdfunding; self-organization
series eCAADe
email
last changed 2022/06/07 07:54

_id 4d59
authors Greer, Kenneth
year 1976
title SPACS : Graphics Editor
source July, 1976. 22 p. : ill. includes index
summary SPACS is an interactive graphics editor for use with a stylus/tablet input device in conjunction with a graphics display terminal. SPACS is well suited for making tables, flow charts, logic diagrams, and other similar schematic diagrams. The user may ultimately obtain a hard copy of her work via the Xerox Graphic Processor (XGP). SPACS is composed of a large PDP-11 program, where the picture processing is performed, and a SAIL program on the PDP-10, which acts as an I/O link for saving and retrieving files. In addition there is another SAIL program for creating image files for the XGP
keywords computer graphics, programming, software
series CADline
last changed 1999/02/12 15:08

_id 266a
authors Klinger, Allen and Dyer, Charles R.
year 1976
title Experiments on Picture Representation Using Regular Decomposition
source Computer Graphics and Image Processing. 1976. vol. 5: pp. 68-105 : ill. includes bibliography
summary The problem of building a computer-searchable data representation for a complex image and the effect of representation on algorithms for scene segmentation into regions is considered. A regular decomposition of picture area into successively smaller quadrants is defined, which involves logarithmic search. This hierarchical search and resulting picture representation are shown to enable rapid access of image data without regard to position, efficient storage, and approximate structural descriptions of constituent patterns. Examples involving solid geometrical objects and alphabetic characters are given
keywords algorithms, image processing, search, decomposition
series CADline
last changed 2003/06/02 13:58

_id 4f07
authors Leach, Edmund
year 1976
title Culture and Communication. The logic by which symbols are connected
source Cambridge University Press. London
summary The recent spread of 'structuralist' writing has been hailed as the dawn of a new age and condemned as an intellectual disaster but, like all fashionable diseases, it is more talked about than understood. Edmund Leach's new book is designed for the use if teaching undergraduates in anthropology, linguistics, literary studies, philosophy and related disciplines faced for the first time with structuralist argument; it provides the prolegomena necessary to understand the final chapter of Levi-Strauss's massive four-volume Mythologiques. The objective is complex, the manner simple. Some prior knowledge of anthropological literature is useful but not essential; the principal ethnographic source is the Book of Leviticus; this guide should help anyone who is trying to grasp the essentials of 'seminology' - the general theory of how signs and symbols come to convey meaning.Although, in essence, a textbook, substantial portions of the argument are here presented for the first time; thus Section 16 contains an innovating contribution to general incest theory, and the analysis of the logic of animal sacrifice presented in Section 18 is an advance on anything previous published on this theme. The author's core thesis is that: 'the indices in non-verbal communication systems, like the sound elements in spoken language, do not have meaning as isolates, but only as members of set'; the book's special merit is that it makes this kind of jargon comprehensible in terms of our everyday experience.
series other
last changed 2003/04/23 15:14

_id 888b
authors Levin, Joshua
year 1976
title A Parametric Algorithm for Drawing Pictures of Solid Objects Composed of Quadric Surfaces
source Communications of the ACM. October, 1976. vol. 19: pp. 555- 563. includes bibliography
summary An algorithm for drawing pictures of three-dimensional objects, with surfaces made up of patches of quadric surfaces, is described. The emphasis of this algorithm is on calculating the intersections of quadric surfaces. A parametrization scheme is used. Each quadric surface intersection curve (QSIC) is represented as a set of coefficients and parameter limits. Each value of the parameter represents at most two points, and these may easily be distinguished. This scheme can find the coordinates of points of even quartic (fourth-order) intersection curves, using equations of no more than second order. Methods of parametrization for each type of QSIC are discussed, as well as surface bounding and hidden surface removal
keywords algorithms, curves, curved surfaces, intersection, hidden surfaces, parametrization, computational geometry
series CADline
last changed 1999/02/12 15:09

_id acadia03_046
id acadia03_046
authors Maze, J., McGlothlin, M. and Tanzer, K.
year 2003
title Fluid (in)form:Influencing Design Through Dynamic Particle Simulation
source Connecting >> Crossroads of Digital Discourse [Proceedings of the 2003 Annual Conference of the Association for Computer Aided Design In Architecture / ISBN 1-880250-12-8] Indianapolis (Indiana) 24-27 October 2003, pp. 357-363
doi https://doi.org/10.52842/conf.acadia.2003.357
summary “My earliest childhood memories are related to a ranch my family owned near the village of Mazamitla. It was a pueblo with hills, formed by houses with tile roofs and immense eaves to shield passersby from the heavy rains which fall in that area. Even the earth’s color was interesting because it was red earth. In this village, the water distribution system consisted of great gutted logs, in the form of troughs, which ran on a support structure of tree forks, five meters high, above the roofs. The aqueduct crossed over the town, reaching the patios, where there were great stone fountains to receive the water. The patios outside the stables, with cows and chickens, all together. Outside, in the street, there were iron rings to tie the horses. The channeled logs, covered with moss, dripped water all over town, of course. It gave this village the ambience of a fairy tale.”(Luis Barragan,qtd in Ambasz 1976)
series ACADIA
email
last changed 2022/06/07 07:58

_id 2ca1
authors Montagu, A. and Bermudez, J.
year 1998
title Datarq: The Development of a Website of Modern Contemporary Architecture
source Computerised Craftsmanship [eCAADe Conference Proceedings] Paris (France) 24-26 September 1998
doi https://doi.org/10.52842/conf.ecaade.1998.x.p7a
summary The pedagogic approach in the architectural field is suffering a deep change taking in consideration the impact that has been produced mainly by the CAD and multimedia procedures. An additional view to be taken in consideration is the challenge produced by the influence of advanced IT which since 1990-92, has affected positively the exchange of information among people of the academic environment. Several studies confirm this hypothesis, from the wide cultural spectrum when the digitalization process was emerging as an alternative way to data processing (Bateson 1976) to the pedagogical-computational side analyzed by (Papert 1996). One of the main characteristics indicated by S. Papert (op.cit) is the idea of "self teaching" which students are used everywhere due to the constant augment of "friendly" software and the decreasing costs of hardware. Another consequences to point out by S. Paper (op.cit) is that will be more probably that students at home will have more actualized equipment that most of the computer lab. of schools in general. Therefore, the main hypothesis of this paper is, "if we are able to combine usual tutorials design methods with the concept of "self-teaching" regarding the paradigmatic architectural models that are used in practically all the schools of architecture (Le Corbusier, F.L.Wright, M.v. der Rohe, M.Botta, T.Ando, etc.) using a Web site available to everybody, what we are doing is expanding the existing knowledge in the libraries and fulfill the future requirements of the newly generations of students".
series eCAADe
email
more http://www.paris-valdemarne.archi.fr/archive/ecaade98/html/35montagu/index.htm
last changed 2022/06/07 07:50

_id 7793
authors Montañez, Darién
year 2001
title TESIS: ARQ.PMA.76/00 (Thesis: ARQ.PMA.76/00)
source SIGraDi biobio2001 - [Proceedings of the 5th Iberoamerican Congress of Digital Graphics / ISBN 956-7813-12-4] Concepcion (Chile) 21-23 november 2001, pp. 13-15
summary Chaos and disorder are adjectives repeated ad nauseam in contemporary discussions on the City of Panama and its architecture. This study intends to find an order in this apparent chaos and chart the development of Panamanian Architecture during the last 25 years. Going beyond the expected list of every important building of the period, we offer a vision of Architecture as a blob generated by these milestones and that envelops them, moving and changing shape with time. This fluctuating form, which is the Architecture of Panama from 1976 to 2000, is generated by using a Style Vs. Time graph, a diagram that allows us to plot each building according to its “style”.
series SIGRADI
email
last changed 2016/03/10 09:55

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