Hixon, H. W. (1908). Notes on lead and copper smelting and copper converting. New York: Hill Publishing Company.
Dyfyniad Arddull ChicagoHixon, Hiram W. Notes On Lead and Copper Smelting and Copper Converting. New York: Hill Publishing Company, 1908.
Dyfyniad MLAHixon, Hiram W. Notes On Lead and Copper Smelting and Copper Converting. New York: Hill Publishing Company, 1908.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.