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Scientific American, Vol. 38, No. 20 (May 1878) (1878)
leaf 8
^tmtifu %mnmn. May 18, 1878.] 311 … © 1878 SCIENTIFIC AMERICAN, INCPatents · Iron · Center · Gold · Valve · Scientific American · Wire · Black oaks · Steam boiler · Safety valve · Iron ore · American supplement · Horse power · Relief valve · Gold wire · Send stamp
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