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Author/Creator
- Anderson, L. O. (LeRoy Oscar), 1905-4
- United States. Forest Service2
- Anderson, Chandler P. (Chandler Parsons), 1866-19361
- Anderson, Charles A. (Charles Alfred), 1902-19901
- Bailey, George Leroy, 1936-1
- Coats, Robert Roy, 1910-1
- Conservation History Association of Texas1
- Costa Rica1
- Cowled, Christopher1
- Edelman, Peter B.1
- Hay, Richard L. (Richard LeRoy), 1926-1
- Heebink, T. B. (Thomas Bruce), 1914-1
- Larson, Pamela J.1
- MacDonald, Donald F. (Donald Francis), 1875-19421
- Miller, Benjamin L. (Benjamin LeRoy), 1874-19441
- National Academy of Social Insurance (U.S.). Conference (13th : 2001 : Washington, D.C.)1
- Panama1
- Pérez Zeledón, P. (Pedro), 1854-19301
- Salisbury, Dallas L.1
- Todd, David, 1959-1