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Soil Survey of Emmet County, Michigan

Stanley D. AlfredAdam G. HydeRichard L. Larson

出版	United States Soil Conservation Service, 1973
URL	http://books.google.com.hk/books?id=Yw6kqfvRfRIC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN