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Riedel, A. (1969). Endemische Zonitidae (Gastropoda) der Balearen. Annales Zoologici, 27 (12): 237-247. Warszawa.
Riedel, A. (1969). Endemische Zonitidae (Gastropoda) der Balearen. Annales Zoologici, 27 (12): 237-247. Warszawa.