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Paleocene Flora of the Rocky Mountains and Great Plains

Roland Wilbur Brown

出版	U.S. Government Printing Office, 1962
URL	http://books.google.com.hk/books?id=CuChpTwqfloC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN

註釋

A study of 170 kinds of plants and the strata that yield them, showing how they apply in the delimination of the Paleocene series.