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  1. 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  
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  2. 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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