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Scientific American, Vol. 36, No. 10 (1877) (1877)
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rent va- regulation of the rieties, so that they strands in the cables can furnish steel can be more easily upon iron, iron be- accomplished; but tween two layers of access to the cables steel, steel between could only be had two layers of iron, by means of lon 2 SS = = = —_ —- py : ; : sh : a… … © 1877 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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