View source for Source:Madden et al:How the Iron Age Began:Scientific American 237:4:by the beginning of the tenth century B.C. blacksmiths were intentionally steeling iron

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==Madden et al.: "by the beginning of the tenth century B.C. blacksmiths were intentionally steeling iron"==
Robert Maddin, James D. Muhly and Tamara S. Wheeler: 
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It seems evident that by the beginning of the tenth century B.C. blacksmiths were intentionally steeling iron.
<ref>Robert Maddin, James D. Muhly and Tamara S. Wheeler, “How the Iron Age Began,” ''Scientific American'' 237/4 [October 1977]:127. Cited by Matthew Roper, [http://blog.fairmormon.org/2013/06/17/labans-sword-of-most-precious-steel-howlers-5-2/ "Laban’s Sword of 'Most Precious Steel' (Howlers #5),"] ''FairMormon Blog'' (17 June 2013)</ref>
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