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Burch, J. B. & Tottenham, J. L. (1980). North American freshwater snails. Species list, ranges and illustrations. Walkerana. 1(3): 81-215 [30 June 1980].
Burch, J. B. & Tottenham, J. L. (1980). North American freshwater snails. Species list, ranges and illustrations. Walkerana. 1(3): 81-215 [30 June 1980].
