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Pocket-book of mechanics and engineering (1864)
Nystrom, John W. (John William), 1824-1885 · Philadelphia, J.B. Lippincott · leaf 104
87. Octahedron, r = 0-40721 s.R = 0-71710 s.a = 3-46410 s*.c = 0-47140 s» … 88. Dodecahedron, r = 1-11350 s.R= 1-36428 s.a = 20-5457 s>.c = 7-66312 s«.Mechanical engineering · Engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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