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  1. By: Lüttschwager, J
    Type: Article
    In: The Philippine journal of science
    Volume: 20
    Date: 1922
    Page Range: 519--542
    Publication Info: Manila, Bureau of Science,
  2. By: Lüttschwager, J
    Type: Article
    In: Archiv für Naturgeschichte
    Volume: 80
    Date: 1914
    Page Range: 1--42
    Publication Info: Berlin, Nicolai, 1912-