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Investigation of Smuggler Lead-zinc Mine, Aspen, Pitkin County, Colo

Melden E. VolinJohn H. Hild

出版	U.S. Department of the Interior, Bureau of Mines, 1950
URL	http://books.google.com.hk/books?id=EqDgsnCse-wC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN