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  1. By: Pfeffer, Pierre
    Type: Article
    In: Bulletin du Muséum national d'histoire naturelle
    Volume: 33
    Series: 2
    Issue: 4
    Date: 1961-11-30
    Page Range: 357--368
    Publication Info: Paris, Imprimerie nationale, 1907-1971
  2. By: Pfeffer, Pierre
    Type: Article
    In: Bulletin du Muséum national d'histoire naturelle
    Volume: 33
    Series: 2
    Issue: 5
    Date: 1962-02-02
    Page Range: 451--461
    Publication Info: Paris, Imprimerie nationale, 1907-1971