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The Book Cliffs Coal Field in Garfield and Mesa Counties, Colorado

Charles Edgar ErdmannDaniel Jerome FisherEdwin Thor McKnightFrancis Gerritt WellsAaron Clement Waters

出版	U.S. Government Printing Office, 1934
URL	http://books.google.com.hk/books?id=F6hEwAEACAAJ&hl=&source=gbs_api