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Keywords from Image Description:
Clausilia dubia clausilium. drawing of clausilium Clausilia dubia scanned by User snek from Ija Michajlovi Licharev Klauziliidy Clausiliidae Fauna SSSR Molljuski Vol Fasc pp Izdat Akad nauk SSSR MoscowLeningrad Image number Clausiliidae pp date or before Ehrmann Hermann Felix Paul st December th October