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Copper Deposits Near Salmon, Idaho, by Clyde P. Ross. [U.S. Geological Survey Bulletin 774.].

Clyde Polhemus RossUnited States. Congress. House

出版	U.S. Government Printing Office, 1925
URL	http://books.google.com.hk/books?id=tLdaQwAACAAJ&hl=&source=gbs_api