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By: DeGraaf, Richard M. - Witman, Gretchin M. - Rudis, Deborah D. - Northeastern Forest Experiment Station (Radnor, Pa.)Edition:Publication info: Amherst, Mass, Northeastern Forest Experiment Station and Eastern Region, Forest Service, 1981Volume: 1981Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects:BHL Collections: