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  1. By: Orenstein, Ronald I. (Ronald Isaac), - Barlow, Jon C. (Jon Charles), - Royal Ontario Museum.
    Publication info: Toronto, Royal Ontario Museum, 1981
    Holding Institution: University of Toronto - Royal Ontario Museum Library & Archives
  1. By: Speirs, J Murray - Orenstein, Ronald I. (Ronald Isaac),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 81
    Issue: 3
    Date: 1967
    Page Range: 175--183
    Publication Info: Ottawa Ottawa Field-Naturalists' Club