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  1. By: Ricker, William Edwin. - Clarke, C. H. D. (Charles Henry Douglas), - Royal Ontario Museum of Zoology.
    Publication info: [Toronto, Royal Ontario Museum], 1939
    Holding Institution: University of Toronto - Royal Ontario Museum Library & Archives
  2. By: Ross, Herbert H. (Herbert Holdsworth), - Ricker, William Edwin.
    Publication info: Urbana, University of Illinois Press, [1971]
    Holding Institution: University Library, University of Illinois Urbana Champaign
  1. By: Ricker, William Edwin. - Robertson, A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 49
    Issue: 8
    Date: 1935-11
    Page Range: 132--134
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Ricker, William Edwin.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 63
    Issue: 3
    Date: 1949
    Page Range: 95--98
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Ricker, William Edwin.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 46
    Issue: 2
    Date: 1932-02
    Page Range: 30--31
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  4. By: Ricker, William Edwin. - Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 55
    Issue: 9
    Date: 1941-12
    Page Range: 137--138
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  5. By: Ricker, William Edwin. - Schnute, Jon T.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 113
    Issue: 4
    Date: 1999
    Page Range: 693--697
    Publication Info: Ottawa Ottawa Field-Naturalists' Club