Paraense, W. L. (1976). Helisoma trivolvis and some of its synonyms in the neotropical region (Mollusca: Planorbidae). Revista de BiologĂa Tropical. 36(1): 187-204.
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Paraense, W. L.
1976
<i>Helisoma trivolvis</i> and some of its synonyms in the neotropical region (Mollusca: Planorbidae).