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Riedel, A. (1972). Zur Kenntnis der Zonitidae (Gastropoda) Spaniens. Annales Zoologici, 29 (5): 115-145. Warszawa [15 April].
Riedel, A. (1972). Zur Kenntnis der Zonitidae (Gastropoda) Spaniens. Annales Zoologici, 29 (5): 115-145. Warszawa [15 April].