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Annandale N. (1924). The evolution of the shell-sculpture in fresh-water snails of the family Viviparidae. Proceedings of the Royal Society of London. Series B. 96(672): 60-76.
Annandale N. (1924). The evolution of the shell-sculpture in fresh-water snails of the family Viviparidae. Proceedings of the Royal Society of London. Series B. 96(672): 60-76.
