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  1. By: Dollfus, Robert Philippe F., - Simha, Shyam Sunder
    Type: Article
    In: Bulletin du MuseĢum national d'histoire naturelle
    Volume: 36
    Series: 2
    Issue: 2
    Date: 1964
    Page Range: 262--267
    Publication Info: Paris Imprimerie nationale 1907-1971