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Please read BHL's Acknowledgment of Harmful Content
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  1. By: B. M. Jessop, B. M. - Lee, R. L. G. - Power, Geoffrey
    Type: Article
    In: The Canadian field-naturalist
    Volume: 84
    Issue: 4
    Date: 1970
    Page Range: 365--367
    Publication Info: Ottawa Ottawa Field-Naturalists' Club