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By: Erickson, Bernard J. - Markstrom, Donald C. - 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, 1972Volume: no.98Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects:BHL Collections: