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By: Waterman, Alma M. (Alma May), Edition:Publication info: New Haven, Conn. (335 Prospect St., New Haven, Conn.), Northeastern Forest Experiment Station, Forest Insect and Disease Laboratory, 1955Volume: 1955Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects: Conifers Diseases and pests ValsaBHL Collections: