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  1. 1
    by Shigo, Alex L., 1930-
    Published 1983
    “...General technical report NE ;...”
    Government Document Book
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    Saved in:
    Tree defects : a photo guide /
  2. 2
    Published 1970
    “...USDA Forest Service general technical report NE...”
    Government Document Serial
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    Saved in:
    At the Northeastern Station.

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