Benthem Jutting, W. S. S. van. (1950). The Malayan species of Boysidia, Paraboysidia, Hypselostoma and Gyliotrachela (Gastropoda, Pulmonata, Vertiginidae) with a catalogue of all the species hitherto described. Bulletin of the Raffles Museum. 21: 5-47.
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Benthem Jutting, W. S. S. van
1950
The Malayan species of <i>Boysidia</i>, <i>Paraboysidia</i>, <i>Hypselostoma</i> and <i>Gyliotrachela</i> (Gastropoda, Pulmonata, Vertiginidae) with a catalogue of all the species hitherto described