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Kruglov N.D., Starobogatov Ya.I. (1984). contribution to the morphology and taxonomy of the subgenus Peregriana (Lymnaea, Gastropoda, Pulmonata) of the Asiatic part of the USSR and adjacent regions. Zoologicheskiy Zhurnal. 63(1): 22-33. (In Russian).
Kruglov N.D., Starobogatov Ya.I. (1984). contribution to the morphology and taxonomy of the subgenus Peregriana (Lymnaea, Gastropoda, Pulmonata) of the Asiatic part of the USSR and adjacent regions. Zoologicheskiy Zhurnal. 63(1): 22-33. (In Russian).