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A Course of Study for the Preparation of Rural School Teachers, Nature Study, Elementary Agriculture, Sanitary Science, and Applied Chemistry

David Eugene SmithEdward Douglas GreenmanFred MutchlerHenry Stoddard CurtisInternational Commission on the Teaching of MathematicsMary Adelaide NuttingMrs. Fannie Fern (Phillips) AndrewsWilliam Heard KilpatrickWilliam Starr MyersWilliam James Craig

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