Nature teaching based upon the general principles of agriculture for the use of schools Watts, Francis, 1859-1930 creator Freeman, William George, 1874- contributor text book New York E. P. Dutton 1904 1904
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ENG Nature study https://www.biodiversitylibrary.org/bibliography/28775 5217166 10.5962/bhl.title.28775 Library, U.S. Dept. of Agriculture