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1
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2Published 1977“...Forest Service, U.S. Dept. of Agriculture, Northeastern Forest Experiment Station,...”
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3Published 1977“...Forest Service, U.S. Dept of Agriculture, Northeastern Forest Experiment Station,...”
Government Document Serial -
4by Shigo, Alex L., 1930-“...U.S. Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station,...”
Published 1983
Government Document Book -
5Published 1969“...Northeastern Forest Experiment Station, Forest Service, U.S. ...”
Government Document Serial -
6Published 1970“...Northeastern Forest Experiment Station, Forest Service, U.S. ...”
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7Published 1981“...Northeastern Forest Experiment Station, Forest Service, U.S. ...”
Government Document Serial -
8Published 1981“...Forest Service, U.S. Dept. of Agriculture, Northeastern Forest Experiment Station,...”
Government Document Serial -
9Published 1977“...Northeastern Forest Experiment Station, Forest Service, U.S. ...”
Government Document Serial