 | Charles G. Cunningham, Denis E. Marchand, Harold J. Prostka, James George Evans, John Calvin Reed, Thomas August Steven, Alan Allwardt, J. C. Antweiler, Robert Sumner Sigafoos, Carl L. Bieniewski, George Wescott Fisher - 1980 - 408 페이지
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 | 1949 - 378 페이지
The geology and fuel resources of a part of the Powder River Basin. | |
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