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Mineral Resources of the Devils Playground and Twin Buttes Wilderness Study Areas, Sweetwater County, Wyoming
Richard E. Van LoenenW. Anthony BryantMichael E. Lane
出版U.S. Government Printing Office, 1991
URLhttp://books.google.com.hk/books?id=sBD50NCmKO8C&hl=&source=gbs_api
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