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  1. By: Crowder, A. A. - Topping, J. - Garwood, A. E. - Handford, M. - Vardy, C. - Bretzke, H.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 106
    Issue: 2
    Date: 1992
    Page Range: 272--277
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Crowder, A. A. - Taylor, Gregory J.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 98
    Issue: 2
    Date: 1984
    Page Range: 151--158
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Crowder, A. A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 88
    Issue: 1
    Date: 1974
    Page Range: 47--55
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  4. By: Crowder, A. A. - Harmsen, R.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 112
    Issue: 3
    Date: 1998
    Page Range: 410--418
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  5. By: Crowder, A. A. - Harmsen, R. - Blatt, Suzanne.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 121
    Issue: 2
    Date: 2007-04-01
    Page Range: 182--190
    Publication Info: Ottawa Ottawa Field-Naturalists' Club