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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Tiedemann, Arthur R. - Klock, Glen O. - Pacific Northwest Forest and Range Experiment Station (Portland, Or.) - United States. Forest Service.
    Publication info: Portland, Or, Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, Forest Service, 1977
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Klock, Glen O.
    Publication info: [Portland], 1969
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library