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  1. By: Davies, Ronald W.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 93
    Issue: 3
    Date: 1979
    Page Range: 310--313
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Brook, H. J. - Rawlings, T A - Davies, Ronald W.
    Type: Article
    In: The Biological bulletin
    Volume: 187
    Date: 1994-08-01
    Page Range: 99--111
    Publication Info: Woods Hole, Mass Marine Biological Laboratory