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Publisher
- United States. Agricultural Stabilization and Conservation Service39
- Dept. of Agriculture, Soil Conservation Service (Washington.)24
- Ohio. Division of Geological Survey20
- USDA-SCS (Fort Worth, Tex.)18
- U.S. Dept. of Agriculture, Soil Conservation Service (Washington.)8
- The Service (Washington, D.C.?)7
- University of Iowa6
- Dept. of Agriculture, Soil Conservation Service (Fort Collins, Colo.)3
- Minnesota Geological Survey3
- The Service (Bozeman, Mont.?)3
- The Service (Jackson, Miss.?)3
- USDA-SCS (Portland, Or.)3
- Ohio. Division of Water2
- Soil Conservation Service2
- Soil Conservation Service (Washington, D.C.?)2
- The Service (Columbia, S.C.)2
- The Service (Salina, Kan.)2
- USDA-SCS (Fort Worth, Texas.)2
- Dept. of Agriculture, Soil Conservation Service (Fort Worth, Tex.)1
- Dept. of Agriculture, Soil Conservation Service (Lanham, Md.)1