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Kindly revised by Dr. Elpidio A. Remigio, Institute of Biology, University of the Philippines, Diliman, QC, Philippines
Burch, J.B. 1988. North American freshwater snails. Introduction, systematics, nomenclature, identification, morphology, habitats, distribution. Walkerana, Transactions of the POETS Society, 2:1-80.
Burch, J.B. 1980. A guide to the freshwater snails of the Philippines. Malacological Review, 13:121-143.
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