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By: Sassaman, Robert W. - Barrett, James W. (James Willis), - Twombley, Asa D. - Pacific Northwest Forest and Range Experiment Station (Portland, Or.) - United States. Forest Service.Edition:Publication info: Portland, Or, Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, 1977Volume: no.226Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects:BHL Collections: