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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Waterman, Alma M. (Alma May),‏ ‎
    Publication info: New Haven, Conn. (335 Prospect St., New Haven, Conn.), Northeastern Forest Experiment Station, Forest Insect and Disease Laboratory, 1955
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Waters, William E., - Waterman, Alma M. (Alma May),‏ ‎
    Publication info: Upper Darby, Pa, Northeastern Forest Experiment Station, 1957
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library