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1by Worley, David P., 1921-, Rocky Mountain Forest and Range Experiment Station (U.S.), United States. Forest Service“...Fort Collins, Colo. : Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept...”
Published 1965
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2by Ffolliott, Peter F., Zander, Almer D., Hansen, Edward A., United States. Forest Service., Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)“...Fort Collins, Colo. : Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept...”
Published 1965
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