Ueshima, R. & Kurozumi, T. (1988). Anatomical Features of Hirasea (s.s.) diplomphalus and Taxonomic Position of the Genus Hirasea Pilsbry, 1902 (Pulmonata : Sigmurethra). Venus (Japanese Journal of Malacology). 47(4): 261-270.
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Ueshima, R. & Kurozumi, T.
1988
Anatomical Features of Hirasea (s.s.) diplomphalus and Taxonomic Position of the Genus Hirasea Pilsbry, 1902 (Pulmonata : Sigmurethra)