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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Peters, John R. - Bowers, Teresa M.
    Publication info: Upper Darby, Pa, Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station, Resources Evaluation, [1977]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. 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
  3. By: Barnard, Joseph E. - Bowers, Teresa M. - Northeastern Forest Experiment Station (Radnor, Pa.) - United States. Forest Service.
    Publication info: Upper Darby, Pa, Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station, 1977
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library