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Minton R. & Gundersen R.W. (2001). Puperita tristis (d'Orbigny, 1842) (Gastropoda: Neritidae) is an ecotype of Puperita pupa (Linnaeus, L767). American Malacological Bulletin. 16(1):13-20.
Minton R. & Gundersen R.W. (2001). Puperita tristis (d'Orbigny, 1842) (Gastropoda: Neritidae) is an ecotype of Puperita pupa (Linnaeus, L767). American Malacological Bulletin. 16(1):13-20.