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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Holmgren, Ralph C. - Brewster, Sam F.
    Publication info: Ogden, Utah, Intermountain Forest & Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1972
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Blaisdell, James P. (James Pershing), - Holmgren, Ralph C.
    Publication info: Ogden, Utah, USDA, Forest Service, Intermountain Forest and Range Experiment Station, 1984
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Hull, A. C. - Holmgren, Ralph C. - Intermountain Forest and Range Experiment Station (Ogden, Utah)
    Publication info: Ogden, Utah, Intermountain Forest & Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1964
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library