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Soil Survey of Chatham County, North Carolina

Robert Campbell JurneyJ. T. MillerSamuel Rankin Bacon

出版	U.S. Department of Agriculture, Bureau of Chemistry and Soils, 1937
URL	http://books.google.com.hk/books?id=uw2_ORqKGsgC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN