Author
Soil Science Society of America
10
Herriot, James
9
Ensminger, M. Eugene 1908-1998
7
United States. Department of the Interior
7
Juergenson, Elwood M.
6
Langhans, Robert W., 1929-
6
National Recreation and Park Association
6
Nordby, Julius E. 1887-1970
6
Pyne, Stephen J., 1949-
6
Resources for the Future
6
American Fisheries Society
5
Whirling Disease Foundation
5
Whirling Disease Symposium
5
American Society of Agronomy
4
Colorado State University
4
Donahue, Roy L. 1908-1999
4
Gierach, John, 1946-
4
Gray, Howard
4
Kelsey, Craig
4
Lattig, Herbert E. 1892-1953
4
Sinnes, A. Cort
4
United States. National Park Service
4
American Association for Leisure and Recreation
3
American Horticultural Society
3
American Society for Horticultural Science
3
Bassert, Joanna M.,
3
Cox, George W., 1935-
3
Crane, Eva
3
Dasmann, Raymond F., 1919-2002
3
Davis, John William, 1917-
3
Dobie, J. Frank 1888-1964
3
Equine Research Publications
3
Faulkner, Edward H. 1886-1964
3
Flint, Mary Louise, 1949-
3
Fogg, George E.
3
Fowler, Virginie, 1916-
3
Frome, Michael
3
Fry, William E.
3
Hafez, E. S. E. 1922-
3
Hawkes, J. G. 1915-2007
3
Hillel, Daniel
3
Horsfall, James G. 1905-1995
3
Mastalerz, John W., 1926-
3
McVickar, Malcolm Hedley, 1913-
3
Messenger, P. S.
3
Metcalf, Robert L. 1916-1998
3
Miller, Char, 1951-
3
Morse, Roger A.
3
Ortho Books
3
Poinar, George O.
3
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