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  1. By: Ledoux, A. - Walker, T. L.
    Type: Article
    In: The Ottawa naturalist
    Volume: 32
    Issue: 1
    Date: 1918-04
    Page Range: 7--8
    Publication Info: Ottawa, Ottawa Field-Naturalists' Club,
  2. By: Walker, T. L.
    Type: Article
    In: The Ottawa naturalist
    Volume: 29
    Issue: 9
    Date: 1915-12
    Page Range: 116--116
    Publication Info: Ottawa, Ottawa Field-Naturalists' Club,
  3. By: Walker, T. L.
    Type: Article
    In: The Ottawa naturalist
    Volume: 29
    Issue: 5-6
    Date: 1915-08
    Page Range: 63--66
    Publication Info: Ottawa, Ottawa Field-Naturalists' Club,