| 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 Seiten
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| 1949 - 378 Seiten
The geology and fuel resources of a part of the Powder River Basin. | |
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