Search results for: Stevens, Robert E., 1928-2020

Showing 1 - 12 results of 12 Refine Results
  1. 1

    Western pine-shoot borer : a threat to intensive management of ponderosa pine in the Rocky Mountain area and southwest

    Authors: Stevens, Robert E., 1928-2020
    Published: Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1977
    Physical Description: 8 pages : illustrations ; 24 cm.
    Government Document Microfilm Book
  2. 2

    Implants and sprays for control of ponderosa pine needle miner in foliage of individual trees

    Authors: Stevens, Robert E., 1928-2020
    Published: USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, 1982
    Physical Description: 4 pages ; 28 cm.
    Government Document Book
  3. 3

    Insects associated with ponderosa pine in the Rocky Mountains and the Southwest

    Authors: Stevens, Robert E., 1928-2020
    Published: Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture, 1982
    Physical Description: 44 pages : illustrations ; 19 cm.
    Government Document Book
  4. 4

    A roundheaded pine beetle outbreak in New Mexico : associated stand conditions and impact

    Authors: Stevens, Robert E., 1928-2020
    Published: Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture, 1974
    Physical Description: 4 pages : map ; 27 cm.
    Government Document Book
  5. 5

    Risk rating guide for mountain pine beetle in Black Hills ponderosa pine

    Authors: Stevens, Robert E., 1928-2020
    Published: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1980
    Physical Description: 2 pages : illustrations ; 28 cm.
    Government Document Book
  6. 6

    Key to large lepidopterous larvae on new foliage of Douglas-fir and true firs

    Authors: Carolin, V. M. (Valentine M.), 1918-
    Published: USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, 1981
    Other Authors: “…Stevens, Robert E., 1928-2020…”
    Physical Description: 4 pages : illustrations ; 28 cm.
    Government Document Book
  7. 7

    Southwestern pine tip moth

    Authors: Jennings, Daniel T.
    Published: U.S. Department of Agriculture, Forest Service, 1982
    Other Authors: “…Stevens, Robert E., 1928-2020…”
    Physical Description: 7 pages : illustrations (some color), 1 map ; 23 cm.
    Government Document Book
  8. 8

    Vigor of ponderosa pine trees surviving mountain pine beetle attack

    Authors: Kaufmann, Merrill R.
    Published: USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, 1984
    Other Authors: “…Stevens, Robert E., 1928-2020…”
    Physical Description: 5 pages : illustrations ; 28 cm.
    Government Document Book
  9. 9

    Mountain pine beetle in Front Range ponderosa pine : what it's doing and how to control it

    Published: Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture, 1974
    Other Authors: “…Stevens, Robert E., 1928-2020…”
    Physical Description: 3 pages ; 28 cm.
    Government Document Book
  10. 10

    Mountain pine beetle infestation characteristics in ponderosa pine, Kaibab Plateau, Arizona, 1975-1977

    Authors: Parker, Douglas L., 1943-
    Published: Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture, 1979
    Other Authors: “…Stevens, Robert E., 1928-2020…”
    Physical Description: 4 pages : illustrations ; 27 cm.
    Government Document Book
  11. 11

    Key to small lepidopterous larvae in opening buds and new shoots of Douglas-fir and true firs

    Authors: Carolin, V. M. (Valentine M.), 1918-
    Published: Rocky Mountain Forest and Range Experiment Station, Forest Station, Forest Service, U.S. Department of Agriculture, 1979
    Other Authors: “…Stevens, Robert E., 1928-2020…”
    Physical Description: 4 pages : illustrations ; 27 cm.
    Government Document Book
  12. 12

    Cydia youngana (Kearfott) (Lepidoptera:Tortricidae) and associates in Engelmann spruce cones, Fraser Experimental Forest, Colorado 1974-1977

    Authors: Schmid, J. M.
    Published: USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, 1981
    Other Authors:
    Physical Description: 5 pages : illustrations ; 28 cm.
    Government Document Book