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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Garrison, George A., - Skovlin, Jon M. - Poulton, Charles E. (Charles Edgar),
    Edition: 3d ed.
    Publication info: [Portland, Or.], Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, U.S. Forest Service, 1967
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library