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By: Hilt, Donald E. - Seegrist, Donald W., - United States. Forest Service. - Northeastern Forest Experiment Station (Radnor, Pa.)Edition:Publication info: Upper Darby, Pa, Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station, 1977Volume: no.236Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects:BHL Collections: