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  1. By: Baughman, Roger N. - Patric, James H., - Northeastern Forest Experiment Station (Radnor, Pa.)
    Publication info: Upper Darby, Pa. :Northeastern Forest Experiment Station, Forest Service, U. S. Dept. of Agriculture,1969.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Patric, James H., - Black, Peter E.
    Publication info: Juneau, Alaska :Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture,1968.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library