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Zoologica; v.54:no.2 (1969:Summer)

Parts

  1. Some Mexican and Central American land snails of the family Cyclophoridae
    By: Thompson, Fred G.
    Type: Article
    In: Zoologica : scientific contributions of the New York Zoological Society.
    Volume: 54
    Issue: 4
    Date: 1969
    Page Range: 35--77
    Publication info: New York.
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  2. The underwater song of Erignathus (Bearded seal)
    By: Ray, Carleton - Watkins, William A - Burns, John J
    Type: Article
    In: Zoologica : scientific contributions of the New York Zoological Society.
    Volume: 54
    Issue: 5
    Date: 1969
    Page Range: 79--83
    Publication info: New York.
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