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  1. By: Belval, Henri - Mérac, Marie-Louise Du
    Type: Article
    In: Bulletin du Muséum national d'histoire naturelle
    Volume: 18
    Series: 2
    Issue: 3
    Date: 1946-05
    Page Range: 287--293
    Publication Info: Paris Imprimerie nationale 1907-1971
  2. By: Belval, Henri - Mérac, Marie-Louise Du
    Type: Article
    In: Bulletin du Muséum national d'histoire naturelle
    Volume: 18
    Series: 2
    Issue: 5
    Date: 1946-10
    Page Range: 460--464
    Publication Info: Paris Imprimerie nationale 1907-1971