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  1. By: Winter, Anton J. de - de Gier, Werner
    Type: Article
    In: ZooKeys
    Volume: 840
    Date: 2019
    Page Range: 21-34
    Publication Info: Pensoft Publishers 2019
    Subjects: Afrotropical region  Cameroon  computerised tomography  land snail  Liberia  Nigeria  Ptychotrema  shell morphology  Stylommatophora  taxonomy