Lange, David C. (David Christoph) · New York : John Wiley & Sons ; London : Chapman & Hall · leaf 120
X XI IX PROBLEMS 109 PLATE Vn lU ^^ •^^ \(^\^ / /\ \ ^ o ^ K V \\ i \ i ^ ,. y \ \ \ 9\ 1 \ \ 1 y \ i/r \ n … no GENERAL METHODS PLATE VIE < 13^ , . ys . 3£ eg k ^ ^ ^ i i J
Shades and shadows · Geometry, Descriptive
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