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  1. By: Hess, Karl. - Alexander, Robert R. - 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
  2. By: Hoffman, George R. - Alexander, Robert R. - 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,[1987]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Alexander, Robert R. - Johnston, Barry C. - 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,[1988]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  4. By: Alexander, Robert R. - 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,[1988]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  5. By: Alexander, Robert R.
    Publication info: Fort Collins, Colo. :U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station,1985.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  6. By: Alexander, Robert R. - 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,1971.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  7. By: Alexander, Robert R. - 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,1971.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  8. By: Alexander, Robert R. - 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,1985.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  9. By: Alexander, Robert R. - Edminster, Carleton B. - 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,[1981]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  10. By: Alexander, Robert R. - Edminster, Carleton B. - 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,[1981]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  11. By: Alexander, Robert R. - Edminster, Carleton B. - 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
  12. By: Alexander, Robert R. - Edminster, Carleton B. - 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
  13. By: Alexander, Robert R. - 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,1973.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  14. By: Alexander, Robert R. - 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,1972.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  15. By: Alexander, Robert R.
    Publication info: Fort Collins, Colo. :Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture,1969.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  16. By: Alexander, Robert R. - Shepperd, Wayne D.
    Publication info: Fort Collins, Colo. :USDA, Forest Service, Rocky Mountain Forest and Range Experiment Station,1984.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  17. By: Alexander, Robert R.
    Publication info: Fort Collins, Colo. :U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station,1986.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  18. By: Alexander, Robert R.
    Publication info: Fort Collins, Colo. :U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station,1986.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  19. By: Alexander, Robert R.
    Publication info: Fort Collins, Colo. :U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station,1986.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  20. By: Alexander, Robert R. - 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,1987.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  21. By: Alexander, Robert R. - 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,1974.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  22. By: Alexander, Robert R.
    Publication info: Fort Collins, Colo. :Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture,1974.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  23. By: Alexander, Robert R. - 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,1967.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  24. By: Alexander, Robert R. - Dahms, Walter G. - Tackle, David,
    Publication info: Fort Collins, Colo. :Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture,1967.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  25. By: Alexander, Robert R.
    Publication info: Fort Collins, Colo. :Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture,1966.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  26. By: Alexander, Robert R. - Edminster, Carleton B. - Shepperd, Wayne D.
    Publication info: Fort Collins, Colo. :Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture,1975.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library