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1by Loomis, Robert M.“...North Central Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture,...”
Published 1980
Government Document Book -
2by Main, William A.“...U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station,...”
Published 1982
Government Document Book -
3by Haines, Donald A.“...U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station,...”
Published 1986
Government Document Book -
4by Main, William A.“...U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station,...”
Published 1990
Government Document Book