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By: Hoff, R. J. (Raymond J.) - Intermountain Research Station (Ogden, Utah)Edition:Publication info: [Ogden, Utah], U.S. Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, 1990Volume: no.416Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects: Disease and pest resistance Northwest, Pacific Ponderosa pine Rust fungi Tree rustsBHL Collections: