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Soil Survey of Murray County, Oklahoma

Elmer Grant FitzpatrickL. E. RoseWilliam Carl Boatright

出版	U.S. Bureau of Chemistry and Soils, 1939
URL	http://books.google.com.hk/books?id=JkkQ2Y64QRIC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN