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Scientific American, Vol. 35, No. 3 (1876) (1876)
leaf 7
aty formation of steatite, is of F, are governed by ropes, H. By this construction, the weight perspective view, illustrating its use. primary period, and is generally found in large ledges and of the fork and load is entirely supported by the clevis, D, so that the levers may be easily operated hy… … © 1876 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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