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  1. By: Lang, Arnold,
    Publication info: Jena, Gustav Fischer, 1908
    Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
    Subjects: Cepaea nemoralis  Gastropoda  Helix hortensis  
  2. By: Kleiner, Elisabeth.
    Publication info: Burg b.M, Druck von A. Hopfer, 1912
    Holding Institution: Smithsonian Libraries and Archives
    Subjects: Anatomy  Cepaea nemoralis  Gastropoda  Generative organs  Helix hortensis