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Pocket-book of mechanics and engineering (1864)
Nystrom, John W. (John William), 1824-1885 · Philadelphia, J.B. Lippincott · leaf 107
101. a = 0-215 r3 = 0-1075 e*. 98 PlANEMETRY. … 102. Ellipse. a = 7tRr= 0-785 D d.Mechanical engineering · Engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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