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Title: Mapping forest risk associated with the hemlock woolly adelgid
Author: Liebhold, Andrew M.; Morin, Randall S.; Lister, Andrew; Gottschalk, Kurt W.; Luzader, Eugene; Twardus, Daniel
Publication: In: Fosbroke, Sandra L. C.; Gottschalk, Kurt W., eds. 2002 January 15-18; Annapolis, MD. Gen. Tech. Rep. NE-300. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northeastern Research Station. p.58.
Abstract: The hemlock woolly adelgid, Adelges tsugae, is native to Asia and was first introduced to North America in British Columbia in the 1920s and was later discovered in the Shenandoah Mountains of Virginia in the 1950s.
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