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Shades and shadows (1921)

Lange, David C. (David Christoph) · New York, John Wiley & sons, inc.; [etc., etc.] · leaf 86

An illustration from Shades and shadows, 1921, leaf 86
c cZ Fig. 30 … 74 SHADOWS OF LINES

Shades and shadows · Geometry, Descriptive

Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.

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