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  1. By: Pase, C. P., - Johnson, R. Roy (Raymond Roy),
    Publication info: Fort Collins, Colo, Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1968
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Reynolds, Hudson G. (Hudson Gillis), - Johnson, R. Roy (Raymond Roy),
    Publication info: Fort Collins, Colo, Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1964
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Johnson, R. Roy (Raymond Roy), - Jones, Dale A.
    Publication info: Fort Collins, Colo, Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1977
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  4. By: Johnson, R. Roy (Raymond Roy), - Carothers, Steven W. (Steven Warren),
    Publication info: [S.l.], Eisenhower Consortium for Western Environmental Forestry Research, 1982
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  1. By: Smith, Edwin B - Johnson, R. Roy (Raymond Roy),
    Type: Article
    In: Rhodora
    Volume: 66
    Date: 1965
    Page Range: 270--272
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],
  2. By: Jackson, Raymond C. (Raymond Carl), - Johnson, R. Roy (Raymond Roy),
    Type: Article
    In: Rhodora
    Volume: 69
    Date: 1967
    Page Range: 476--480
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],