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Refractory-clay Deposits of Wyoming

Joel N. Van SantLincoln A. StewartVernon B. DaleA. J. Pfister

其他書名	1960-1961
出版	U.S. Department of the Interior, Bureau of Mines, 1960
URL	http://books.google.com.hk/books?id=mo2GECaglvEC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN