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Renovation of worn-out soils
- Spillman, W. J. (William Jasper)
- Farmers' bulletin (United States. Dept. of Agriculture) ; no. 245 1906
- Soil management, Soil productivity, soil, soil amendments, soil degradation, soil conservation, soil quality, soil fertility, soil erosion, land restoration, green manures, soil organic matter, and soil exhaustion
- 16 p. ; 23 cm.
- U.S. Dept. of Agriculture
- Organic Roots Collection