Author/Creator
- United States. Soil Conservation Service942
- United States. Forest Service93
- Texas Agricultural Experiment Station91
- United States. Natural Resources Conservation Service61
- Ohio Agricultural Research and Development Center50
- Ohio. Division of Lands and Soil46
- Kansas Agricultural Experiment Station42
- Colorado Agricultural Experiment Station36
- Oklahoma Agricultural Experiment Station30
- Purdue University. Agricultural Experiment Station30
- University of Illinois at Urbana-Champaign. Agricultural Experiment Station30
- California Agricultural Experiment Station28
- United States. Bureau of Indian Affairs27
- Arkansas Agricultural Experiment Station26
- University of Georgia. College of Agriculture. Experiment Stations25
- Iowa Agriculture and Home Economics Experiment Station24
- University of Minnesota. Agricultural Experiment Station24
- United States. Bureau of Land Management22
- Michigan State University. Agricultural Experiment Station21
- Kentucky Agricultural Experiment Station20