Author
United States. Natural Resources Conservation Service
20
United States. Soil Conservation Service
9
Ohio. Division of Soil and Water Conservation
8
Cornell University. Agricultural Experiment Station
4
Ohio Agricultural Research and Development Center
4
United States. Forest Service
4
Faulkner, Edward H. (Edward Hubert), 1886-1964
3
Hillel, Daniel
3
Kabata-Pendias, Alina
3
Lal, R.
3
Mifʻal tirgume ha-madaʻ ha-Yiśreʼeli
3
Ohio State University. Extension
3
Soil Science Society of America
3
American Society for Testing Materials
2
American Society of Agronomy
2
Bear, Firman E. (Firman Edward), 1884-1967
2
Black, C. A. (Charles Allen)
2
Brewer, Roy
2
Bunting, Brian T.
2
Buol, S. W.
2
Buzard, R. W.
2
Carter, Martin R.
2
Dale, Tom, 1899-1965
2
Davy, Humphry, Sir, 1778-1829
2
Graham, T. E.
2
Grunwald, Sabine
2
Hole, Francis Doan, 1913-
2
Maine Soil and Water Conservation Commission
2
Massachusetts Agricultural Experiment Station
2
McCracken, R. J.
2
Montgomery, David R., 1961-
2
New Jersey Agricultural Experiment Station
2
Olson, Gerald W.
2
Pendias, Henryk
2
Pochvennyĭ institut imeni V.V. Dokuchaeva
2
Robinson, Gilbert Wooding, 1888-1950
2
Roth, Linn E.
2
Russell, Edward J. (Edward John), Sir, 1872-1965
2
Selim, H. Magdi (Hussein Magdi), 1944-
2
Smith, Keith A., 1940-
2
Stucki, J. W.
2
Tan, Kim H. (Kim Howard), 1926-
2
Tedrow, John C. F., 1917-2014
2
Thompson, Louis M. (Louis Milton)
2
Tinker, P. B. (Philip Bernard)
2
Unesco
2
Vermont Agricultural Experiment Station
2
Winegardner, Duane L.
2
Adams, John Anthony, 1944-
1
African Studies Association of the United Kingdom
1
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