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  1. By: Johnson, David W. (David Winslow), - United States. Forest Service. Rocky Mountain Region. Forest Insect and Disease Management.
    Publication info: Lakewood, Colo, Forest Insect and Disease Management, State and Private Forestry, Rocky Mountain Region, USDA, Forest Service, 1976
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Johnson, David W. (David Winslow),
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Johnson, David W. (David Winslow), - Hawksworth, Frank G. (Frank Goode), - Hildebrand, D.M.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  4. By: Johnson, David W. (David Winslow),
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  5. By: Johnson, David W. (David Winslow), - Hildebrand, D.M.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  6. By: Johnson, David W. (David Winslow),
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  7. By: Hadfield, James S. - Johnson, David W. (David Winslow), - United States. Forest Service. Pacific Northwest Region.
    Publication info: [Portland, Or.], Dept. of Agriculture, Forest Service, Pacific Northwest Region, 1977
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  8. By: Johnson, David W. (David Winslow), - Hawksworth, Frank G., - Merrill, Laura Margareth. - United States. Forest Service. Rocky Mountain Region. Timber, Forest Pest, and Cooperative Forestry Management.
    Publication info: Lakewood, Colo, U.S. Forest Service, Rocky Mountain Region, Timber, Forest Pest, and Cooperative Forestry Management, [1984]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  9. By: Johnson, David W. (David Winslow), - Hawksworth, Frank G. (Frank Goode),
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  10. By: Johnson, David W. (David Winslow),
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library