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Please read BHL's Acknowledgment of Harmful Content
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  1. By: United States. State and Private Forestry. Northeastern Area.
    Publication info: [United States], U.S. Dept. of Agriculture, Forest Service, Northeastern Area, [2000]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Diseases and pests  Eastern hemlock  Forest insects  Host plants  Melanophila fulvoguttata