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Contributions to Economic Geology (short Papers and Preliminary Reports), 1911. Part I. -- Metals and Nonmetals Except Fuels. Waldemar Lindgren, Chief Geologist. [U.S. Geological Survey Bulletin 530.].

United States. Congress. House

出版	1913
URL	http://books.google.com.hk/books?id=U7r8wQEACAAJ&hl=&source=gbs_api