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2. The Modern farmer, Vol. 13 - Vol. 15
3. Textbook of general horticulture
4. Introductory foods
5. Technology on the farm: a special report by an interbureau committee and the Bureau of Economics of the United States Department of Agriculture.
6. The biochemistry of symbiotic nitrogen fixation
7. Why farmers are poor: the agricultural crisis in the United States
8. Government and agriculture: the growth of federal farm aid
9. [Exploratory survey of personnel in rural social studies for the American council on education, Washington, D.C.]
10. Colonial forest administration
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