File:Results of Fertilizer test field Tennessee Valley Authority 1942.gif
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Results_of_Fertilizer_test_field_Tennessee_Valley_Authority_1942.gif (590 × 471 pikseli, rozmiar pliku: 98 KB, typ MIME: image/gif)
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- Great Depression and New Deal at Franklin D. Roosevelt Library & Museum
- Fields in the United States
- Clouds in Tennessee
- Trees in the United States
- Agriculture in the 1940s
- Black and white photographs of men wearing hats in the United States
- Effects of fertilizers
- 1942 in the United States
- Tennessee Valley Authority
- Black and white photographs of the United States in the 1940s
- Men at work in the 1940s
- People crouching
- Science experiments