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Industrial drawing and geometry; an introduction to various branches of technical drawing (1911)
Spooner, Henry John, 1856- · London, New York [etc.] Longmans, Green, and co. · leaf 79
A D B Pig. 184.—Mass-centre.Mechanical drawing · Geometrical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
More pictures from Industrial drawing and geometry; an introduction to various branches of technical drawing
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