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Relative Effects of Grouped Physical Variables on the Revenue-cost System of a Lead-zinc Mining Operation

Richard E. Dawes

出版	U.S. Department of the Interior, Bureau of Mines, 1969
URL	http://books.google.com.hk/books?id=rveLFEk0e7AC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN