Dumrongrojwattana, P., Chuenit, S. & Wongkamhaeng, K. (2021). A new species of the world's smallest cave snail of the genus
Angustopila Jochum, Slapnik & Páll-Gergely in Jochum, et al., 2014 (Gastropoda: Hypselostomatidae) from eastern Thailand.
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