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Practical problems in mechanical drawing and blueprint reading (1921)
Sturtevant, Walter W. [from old catalog] · Minneapolis, Minn. : Practical problems co. · leaf 93
91 … 1 ^\^ ^^ :> ■ ^ >^^fi^ V i m> N ^ - y^ — — j 1 ■ ,„, , , 93Blueprints · Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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