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Mineral Resources of the Lower John Day and Thirtymile Study Areas, Gilliam and Sherman Counties, Oregon
Harry W. Campbell
Edward L. McHugh
出版
Western Field Operations Center, U.S. Department of the Interior, Bureau of Mines
, 1987
URL
http://books.google.com.hk/books?id=ZNwEHQAACAAJ&hl=&source=gbs_api