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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Crouch, Glenn LeRoy, - Hafenstein, Erwin. - Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
    Publication info: Portland, Or, Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, [1977]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library