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  1. By: Benson, Denis A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 85
    Issue: 3
    Date: 1971
    Page Range: 271--272
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Benson, Denis A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 85
    Issue: 4
    Date: 1971
    Page Range: 349--350
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Benson, Denis A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 87
    Issue: 3
    Date: 1973
    Page Range: 335--335
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  4. By: Benson, Denis A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 87
    Issue: 4
    Date: 1973
    Page Range: 480--480
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  5. By: Benson, Denis A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 87
    Issue: 3
    Date: 1973
    Page Range: 338--339
    Publication Info: Ottawa Ottawa Field-Naturalists' Club