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List of the Publications on Soils Issued by the State Agricultural Experiment Stations of the United States Through 1926

Cora Lucinda Feldkamp

出版	U.S. Department of Agriculture Library, 1927
URL	http://books.google.com.hk/books?id=WwOcJfdOszYC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN