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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Berndt, H. W. - Gibbons, Robert D. - Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.) - United States. Forest Service.
    Publication info: Fort Collins, Colo, Rocky Mountain Forest and Range Experiment Station, 1958
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library