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Shells as evidence of the migrations of early culture

Marine shells of South Africa: a catalogue of all the known species

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Index testaceologicus an illustrated catalogue of British and foreign shells, containing about 2,800 figures accurately coloured after nature

• Three new land shells from Peru.
  Auteur(s): Haas, Fritz
• A tentative classification of the palearctic unionids.
  Auteur(s): Haas, Fritz
• Remarks on and descriptions of South American non-marine shells.
  Auteur(s): Haas, Fritz