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  • Rickard, T.A. "The Use of Meteoric Iron." Royal Anthropological Institute of Great Britain and Ireland. 1941. (Jan. 6, 2009) http://www.jstor.org/pss/2844401
  • "Steel Works Glossary." American Iron and Steel Institute. 2008. (Dec. 22, 2008)http://www.steel.org/Content/NavigationMenu/LearningCenter/SteelGlossary/Steel_Glossary.htm
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  • Young, Suzanne M.M. et al. "The earliest use of iron in China." Metals in antiquity. 1999. (Jan. 6, 2009) http://donwagner.dk/