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  1. By: Padnos, Morton - Nigrelli, Ross F. (Ross Franco),
    Type: Article
    In: Zoologica : scientific contributions of the New York Zoological Society.
    Volume: 32
    Issue: 19
    Date: 1947
    Page Range: 169--172
    Publication info: New York.
  2. By: Padnos, Morton - Nigrelli, Ross F. (Ross Franco),
    Type: Article
    In: Zoologica : scientific contributions of the New York Zoological Society.
    Volume: 27
    Issue: 12
    Date: 1942
    Page Range: 65--72
    Publication info: New York.