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List of Workers in Subjects Pertaining to Agriculture and Home Economics in the U. S. Department of Agriculture and in the State Agricultural Colleges and Experiment Stations ...

United States. Department of Agriculture

出版	U.S. Government Printing Office, 1919
URL	http://books.google.com.hk/books?id=9x6XnxDBFa4C&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN