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  1. By: Powell, Douglas S. - Considine, Thomas J.
    Publication info: [Broomall, Pa.] :United States Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station,1982.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Powell, Douglas S. - Northeastern Forest Experiment Station (Radnor, Pa.)
    Publication info: Broomall, Pa. :U.S. Dept. of Agriculture, Forest Service, Northeastern Station,1985.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Kingsley, Neal P. - Powell, Douglas S.
    Publication info: Broomall, Pa. :Forest Service, U.S. Dept. of Agriculture, Northeastern Forest Experiment Station,1978.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  4. By: Powell, Douglas S. - Kingsley, Neal P. - Northeastern Forest Experiment Station (Radnor, Pa.) - United States. Forest Service.
    Publication info: Broomall, Pa. :Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station,1980.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  5. By: Powell, Douglas S. - Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
    Publication info: Ft. Collins, CO :U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station,[1993]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  6. By: Powell, Douglas S. - Dickson, David R. - Northeastern Forest Experiment Station (Radnor, Pa.)
    Publication info: Broomall, Pa. :U.S. Dept. of Agriculture, Forest Service, Northeastern Station,1984.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  7. By: Considine, Thomas J. - Powell, Douglas S. - Northeastern Forest Experiment Station (Radnor, Pa.)
    Publication info: Broomall, Pa. (370 Reed Rd., Broomall, Pa. 19008) :U.S. Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station,1980.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  8. By: Powell, Douglas S. - Bowers, Teresa M. - Northeastern Forest Experiment Station (Radnor, Pa.) - United States. Forest Service.
    Publication info: Broomall, Pa. :Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station,1978.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library