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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Gieben, Hans
    Type: Article
    In: Annales de la Société entomologique de Belgique
    Volume: 54
    Date: 1910
    Page Range: 144--182
    Publication Info: Bruxelles, Société entomologique de Belgique, 1864-1924
  2. By: Gieben, Hans
    Type: Article
    In: The Philippine journal of science
    Volume: 19
    Date: 1922
    Page Range: 439--515
    Publication Info: Manila, Bureau of Science,