Author: Abdel-Malek E.T.,
Title: Morphological studies on the family Planorbidae (Moll
Description: 1954. : Pulmonata) I. Genital organs of Helisoma trivolvis (Subfamily Helisomatinae, F.C. Baker, 1945). In 8vo, original wrappers, pp. 22 + 4 pls. Offprint from Trans, Amer. Microsc. Soc., 73(2)

Keywords: shells molluscs


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