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  1. By: Fenton, M. Brock (Melville Brockett), - Van Zyll de Jong, C. G. - Bell, G. P. - Campbell, David B. - Laplante, M.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 94
    Issue: 4
    Date: 1980
    Page Range: 416--420
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Campbell, David B. - Turner, Richard L.
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 97
    Date: 1984
    Page Range: 167--178
    Publication Info: Washington, Biological Society of Washington,
  3. By: Turner, Richard L. - Campbell, David B.
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 94
    Date: 1981
    Page Range: 344--351
    Publication Info: Washington, Biological Society of Washington,