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  1. A field key to the adult hymenopterous parasites of the spruce budworm in Minnesota /
    By: Wilson, Louis F. - Bean, James L. - Lake States Forest Experiment Station (Saint Paul, Minn.)
    Publication info: St. Paul, Minn. :Lake States Forest Experiment Station, U.S. Dept. of Agriculture,1964.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Hymenoptera  Identification  Minnesota  Parasites  Spruce budworm  
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  2. The spruce budworm /
    By: Brown, R. C.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,[1944]
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Conifers  Diseases and pests  Jack pine  Spruce budworm  
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  3. The spruce budworm and larch sawfly. Lecture
    By: Hewitt, Charles Gordon, - Canadian forestry convention, Quebec, 1911.
    Publication info: Kingston,British whig publishing co., limited,1911.
    Contributed by: Library of Congress
    Subjects: Sawflies  Spruce budworm  
    BHL Collections: Library of Congress
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  4. The spruce budworm in New Brunswick.
    By: Balch, R. E. - Canada.
    Publication info: Ottawa :Canada Department of Agriculture,1958.
    Contributed by: Agriculture and Agri-Food Canada (archive.org)
    Subjects: Diseases and pests  New Brunswick  Spruce  Spruce budworm  
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