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  1. By: Heyland, J. Douglas
    Type: Article
    In: The Canadian field-naturalist
    Volume: 84
    Issue: 4
    Date: 1970
    Page Range: 397--397
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Heyland, J. Douglas
    Type: Article
    In: The Canadian field-naturalist
    Volume: 84
    Issue: 4
    Date: 1970
    Page Range: 397--398
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Blokpoel, Hans, - Heyland, J. Douglas - Burton, J. - Samson, N.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 89
    Issue: 3
    Date: 1975
    Page Range: 268--277
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  4. By: Mary-Rousselière, Guy - Heyland, J. Douglas
    Type: Article
    In: The Canadian field-naturalist
    Volume: 88
    Issue: 1
    Date: 1974
    Page Range: 92--92
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  5. By: Heyland, J. Douglas - Chamberlain, Everett B. - Kimball,Charles F. - Baldwin,Donald H.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 84
    Issue: 4
    Date: 1970
    Page Range: 398--399
    Publication Info: Ottawa Ottawa Field-Naturalists' Club