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Biostratigraphy of the Phosphoria, Park City, and Shedhorn Formations

Ellis Leon Yochelson

出版	U.S. Government Printing Office, 1968
URL	http://books.google.com.hk/books?id=Fc8slcdWYbwC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN

註釋

Distribution of megafossils in more than 1,500 collections, mainly from measured sections, and their paleoecological interpretation.