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  1. By: Dery, D. A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 42
    Issue: 9
    Date: 1928-12
    Page Range: 212--221
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Dery, D. A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 38
    Issue: 10
    Date: 1924-12
    Page Range: 194--194
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Dery, D. A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 38
    Issue: 10
    Date: 1924-12
    Page Range: 194--194
    Publication Info: Ottawa Ottawa Field-Naturalists' Club