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Burch, J. B. (1977). A new freshwater snail (Basommatophora: Planorbidae) from Australia, Plesiophysa (Bayardella) johni. Malacological Review. 10: 79-80.
Burch, J. B. (1977). A new freshwater snail (Basommatophora: Planorbidae) from Australia, Plesiophysa (Bayardella) johni. Malacological Review. 10: 79-80.