GEOGRAPHY AND THE PROPERTIES OF SURFACES. A NOMOGRAPHIC REPRESENTATION OF THE GEOID.
Paper no. 2, Harvard Papers in Theoretical Geography,
HARVARD UNIV CAMBRIDGE MASS LAB FOR COMPUTER GRAPHICS
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This report employs a principle of duality that for every graphical mapping of the relationships among three variables there exists a nomograph or concurrency chart and it extends the idea to the analysis of geographical distributions considered as surfaces. Author