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Tzvetkov, B. N. (1938). Dextral and sinistral forms of the mollusc Fruticicola Lantzi Lndh. and their geographical distribution. Bulletin de la Société impériale des naturalistes de Moscou, Section biologique. 47(5-6): 414-418.
Tzvetkov, B. N. (1938). Dextral and sinistral forms of the mollusc Fruticicola Lantzi Lndh. and their geographical distribution. Bulletin de la Société impériale des naturalistes de Moscou, Section biologique. 47(5-6): 414-418.
