Hixon, H. W. (1908). Notes on lead and copper smelting and copper converting. New York: Hill Publishing Company.
Παραπομπή Chicago StyleHixon, Hiram W. Notes On Lead and Copper Smelting and Copper Converting. New York: Hill Publishing Company, 1908.
Παραπομπή MLAHixon, Hiram W. Notes On Lead and Copper Smelting and Copper Converting. New York: Hill Publishing Company, 1908.
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