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By: Barnard, Joseph E. - Bowers, Teresa M. - Northeastern Forest Experiment Station (Radnor, Pa.) - United States. Forest Service.Edition:Publication info: Upper Darby, Pa, Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station, 1977Volume: no.249Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects:BHL Collections: