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By: Mathiasen, Robert L. - Hawksworth, Frank G. (Frank Goode), - Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)Edition:Publication info: Fort Collins, Colo, Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1980Volume: no.224Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects: Arizona Diseases and pests Dwarf mistletoes Rocky Mountain bristlecone pineBHL Collections: