Contour Farming. Saves Soil, Water, Fertilizer.

Image (illustration or photograph) for this item, linking to higher res image.

Citation

War Boards, U.S. Department of Agriculture. 1943. “Contour Farming. Saves Soil, Water, Fertilizer..” Special Collections, USDA National Agricultural Library. Accessed November 28, 2024, https://www.nal.usda.gov/exhibits/speccoll/items/show/250.