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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Spiro-Kern, A - Chen, P. S.
    Type: Article
    In: Revue suisse de zoologie
    Volume: 87
    Date: 1980
    Page Range: 869--873
    Publication Info: Genève, Kundig [etc.],
  2. By: Spiro-Kern, A - Chen, P. S.
    Type: Article
    In: Revue suisse de zoologie
    Volume: 79
    Date: 1972
    Page Range: 1151--1159
    Publication Info: Genève, Kundig [etc.],