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Paleozoic and Mesozoic Stratigraphy of the Northern Part of the Ruby Range, Southwestern Montana

Russell G. Tysdal

出版	U.S. Government Printing Office, 1976
URL	http://books.google.com.hk/books?id=QDNu1P9ClvMC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN