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Riedel, A. (1977). Materialen zur Kenntnis der Zonitidae (Gastropoda). IX–XI. Annales Zoologici, 33 (24): 495-515. Warszawa.
Riedel, A. (1977). Materialen zur Kenntnis der Zonitidae (Gastropoda). IX–XI. Annales Zoologici, 33 (24): 495-515. Warszawa.