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  1. By: Peterson, Roger S. - Intermountain Forest and Range Experiment Station (Ogden, Utah)
    Publication info: Ogden, Utah, Intermountain Forest & Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1963
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Peterson, Roger S.
    Publication info: Ogden, Utah, Intermountain Forest & Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1966
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Peterson, Roger S. - Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.) - United States. Forest Service.
    Publication info: [Washington, D.C.?], Dept. of Agriculture, Forest Service, [1960]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  1. By: Peterson, Roger S. - Wherry, Edgar T. (Edgar Theodore), - Moran, Reid - Ornduff, Robert
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 16
    Date: 1962
    Page Range: 269--272
    Publication Info: Berkeley, California Botanical Society,
  2. By: Peterson, Roger S.
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 19
    Date: 1967
    Page Range: 79--91
    Publication Info: Berkeley, California Botanical Society,