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  1. By: Douglass, Richard J. - Fisher, Lorne G. - Mair, Marnie
    Type: Article
    In: The Canadian field-naturalist
    Volume: 97
    Issue: 1
    Date: 1983
    Page Range: 71--74
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Douglass, Richard J. - Douglass, Kristiin
    Type: Article
    In: The Canadian field-naturalist
    Volume: 91
    Issue: 1
    Date: 1977
    Page Range: 72--73
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Douglass, Richard J. - McNaughton, Andrew E. L
    Type: Article
    In: The Canadian field-naturalist
    Volume: 91
    Issue: 1
    Date: 1977
    Page Range: 96--96
    Publication Info: Ottawa Ottawa Field-Naturalists' Club