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Shades and shadows (1921)
Lange, David C. (David Christoph) · New York, John Wiley & sons, inc.; [etc., etc.] · leaf 80
1 1 II Mu \A Fig. 20 ^/^ 1 G j I … Fig. 22 68 SHADOWS OF LINES Fig. 24 p. \ \ 6^Shades and shadows · Geometry, Descriptive
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
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