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- Biotechnology1
- Crops1
- Depressions1
- Documentary photography1
- Economic aspects1
- Food1
- Food security1
- Genetic engineering1
- Genetically modified foods1
- History1
- Rural conditions1
- Social aspects1
- Social life and customs1
- Stryker, Roy Emerson, 1893-19751
- United States. Farm Security Administration1
- United States. Office of War Information1
- United States. Resettlement Administration1