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Contributions to Economic Geology, 1907. Part I. -- Metals and Nonmetals, Except Fuels, [by] C.W. Hayes and Waldemar Lindgren, Geologists in Charge. [U.S. Geological Survey Bulletin No. 340.].

United States. Congress. House

出版	1908
URL	http://books.google.com.hk/books?id=sVmDzQEACAAJ&hl=&source=gbs_api