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Soil Survey of Andrews County, Texas

Nathaniel R. ConnerHarold W. HydeHerbert R. Stoner

出版	U.S. Department of Agriculture, Soil Conservation Service, 1974
URL	http://books.google.com.hk/books?id=YQiiihxwVZkC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN