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Training Teachers of Agriculture

American Association for the Advancement of Agricultural Teaching. MeetingFred Clayton ButlerFrederick William ReynoldsHarry Percy BarrowsHenry Harold GoldbergerJ. H. BerkowitzNational Council of Primary Education (U.S.). MeetingUnited States. Bureau of EducationUnited States. Bureau of Education. Division of StatisticsUnited States. Bureau of Education. Statistical DivisionUnited States. Office of EducationWalter Sylvanus DeffenbaughWalton Simon BittnerCarl AndersonJohn Charles Muerman

其他書名	Papers Presented at the Ninth Annual Meeting of the American Association for the Advancement of Agricultural Teaching, Baltimore, Md., January 7, 1919
出版	U.S. Government Printing Office, 1920
URL	http://books.google.com.hk/books?id=URQ_AQAAMAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN