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Burch, J. B. (1982). North American freshwater snails: identification keys, generic synonymy, supplemental notes, glossary, references, index. Walkerana. 1(4): 217-365 [30 December 1982].
Burch, J. B. (1982). North American freshwater snails: identification keys, generic synonymy, supplemental notes, glossary, references, index. Walkerana. 1(4): 217-365 [30 December 1982].
