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Zinc Smelting in the Horizontal Retort Fired with Natural Gas

其他書名	Nature of retort charge vs. rates of spelter production
出版	U.S. Department of the Interior, Bureau of Mines, 1948
URL	http://books.google.com.hk/books?id=EwGHS0zhzVQC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN