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A manual of mechanical drawing (1907)
Johnston, Philip Devereux, 1855- · New York, D. Williams Company · leaf 46
6 1 5 ^ i K … / \ i ^/^V X 1 l/f - ^^ \l 1 *3\ ^/ X 1 \ ~ X i___ \sZ_ _1 1 i^\ ■> \ 2 3 1 1 1 1Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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