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Scientific American, Vol. 42, No. 13 (March 1880) (1880)

leaf 7

An illustration from Scientific American, Vol. 42, No. 13 (March 1880), 1880, leaf 7
de when the arts were young, and performed a portion of departments of the Anderson Steel Works of Pittsburg, Pa., operations of the laboratory where a luting is required to re- all the work, is better than the specialist; he may be an in- sist the action of acid fumes. represents one of the… … make her dangerously sick. and cobalt. GRINDING ROTARY COLTERS. © 1880 SCIENTIFIC AMERICAN, INC

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