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Geologic Framework of the Niobrara River Drainage Basin and Adjacent Areas in South Dakota Generally East of the 100th Meridian West Longitude and West of the Missouri River

Robert Francis Diffendal

出版	Conservation and Survey Division, Institute of Agriculture and Natural Resources, University of Nebraska-Lincoln, 1994
URL	http://books.google.com.hk/books?id=VAc8fSonNA0C&hl=&source=gbs_api