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  1. By: Back, H.-E.
    Type: Article
    In: Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn
    Volume: 28
    Date: 1977
    Page Range: 198--206
    Publication Info: Bonn, Das Forschungsinstitut,
  2. By: Back, H.-E. - Rachuba, R
    Type: Article
    In: Nota lepidopterologica
    Volume: 8
    Date: 1985
    Page Range: 3--7
    Publication Info: Bonn,
  3. By: Back, H.-E. - Rachuba, R
    Type: Article
    In: Nota lepidopterologica
    Volume: 7
    Date: 1984
    Page Range: 299--308
    Publication Info: Bonn,