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  1. By: Andrle, Robert F
    Type: Article
    In: The Wilson bulletin
    Volume: 79
    Issue: 2
    Date: 1967
    Page Range: 163--187
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  2. By: Andrle, Robert F
    Type: Article
    In: The Canadian field-naturalist
    Volume: 90
    Issue: 4
    Date: 1976
    Page Range: 480--481
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Andrle, Robert F
    Type: Article
    In: The Canadian field-naturalist
    Volume: 83
    Issue: 2
    Date: 1969
    Page Range: 165--165
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  4. By: Andrle, Robert F
    Type: Article
    In: The Canadian field-naturalist
    Volume: 87
    Issue: 2
    Date: 1973
    Page Range: 170--171
    Publication Info: Ottawa Ottawa Field-Naturalists' Club