Clench, W. J. & Jacobson, M. K. (1971). A monograph of the genera Calidviana, Ustronia, Troschelviana, and Semitrochatella (Mollusca: Archaeogastropoda: Helicinidae) in Cuba. Bulletin of the Museum of Comparative Zoology. 141(7): 403-463.
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Clench, W. J. & Jacobson, M. K.
1971
A monograph of the genera <i>Calidviana</i>, <i>Ustronia</i>, <i>Troschelviana</i>, and <i>Semitrochatella</i> (Mollusca: Archaeogastropoda: Helicinidae) in Cuba