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  1. By: Shepperd, W.D. - Jeffers, Richard M. - Ronco, Frank. - Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
    Publication info: Fort Collins, Colo, Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1981
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Engelmann spruce  Growth  Provenance trials  Rocky Mountains  Seedlings  Trees
  2. By: Van Haverbeke, David F., - Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
    Publication info: Fort Collins, Colo, Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1986
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Genetics  Ponderosa pine  Provenance trials
  3. By: Van Deusen, James L. - Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
    Publication info: Fort Collins, Colo, Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1980
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Great Plains  Ponderosa pine  Provenance trials  Windbreaks, shelterbelts, etc
  4. By: Read, Ralph A.,
    Publication info: Fort Collins, Colo, Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1971
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Nebraska  Provenance trials  Scots pine  
  5. By: Read, Ralph A., - Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
    Publication info: Fort Collins, Colo, U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, [1983]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Ponderosa pine  Provenance trials