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1
[Washington, DC] : United States, Department of Agriculture, 1993

Book
2
New York : Springer-Verlag, 1990

Book
3
Boulder : Westview Press, 1986

Book
4
Washington, D.C. : National Academy Press, 1985

Book
5
Dordrecht ; Boston : Kluwer Academic Publishers, 2000

Conference Proceeding Book
6
by Danbom, David B., 1947-
Fargo, N.D. : North Dakota Institute for Regional Studies, 1990

Book
7
by Lugo, Ariel E.
Rio Piedras, P.R. : Dept. of Agriculture, Forest Service, International Institute of Tropical Forestry 1999

Government Document Book
8
by Bates, Daniel W., Murphey, Ernest W., Beam, Martin G.
Washington, DC : United States Government Printing Office, 1971

Government Document Book
9

Journal
10
[University Park, PA] : The School, 1997

Serial
11
Portland, OR : U.S. Department of Agriculture, Pacific Northwest Research Station, 2017

Government Document Journal
12
Harrisburg, [Pa.] : Pennsyvlania Department of Forests and Waters, 1951

Government Document Serial
13
by Greenland, Donald C., Gill, Robert L.
Washington, DC : United States Government Printing Office, 1971

Government Document Book
14
Newtown Square, PA : Northern Research Station, USDA Forest Service, 2007

Government Document Journal
15
by Blair, Robert M.
[New Orleans, La.] : Southern Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1969

Government Document Book
16
Washington : National Academy of Sciences, 1977

Book
17
Norwalk, Ohio : Environmental Explorations, 1986

Government Document Book
18
by Shear, C. B. (Cornelius B.), 1912-
Washington : U.S. Dept. of Agriculture, 1953

Government Document Book
19
by Abbott, Herschel G. (Herschel George), 1921-
Upper Darby, Pa. : Northeastern Forest Experiment Station, 1960

Government Document Book
20

Government Document Serial