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Davis, G. M., Chen, C.-E. & Yu, S. H. (1994). Unique morphological innovation and population variation in Gammatricula songi, a new species of Triculinae from China (Gastropoda: Rissoacea). Proceedings of the Academy of Natural Sciences of Philadelphia. 145: 107-145.
Davis, G. M., Chen, C.-E. & Yu, S. H. (1994). Unique morphological innovation and population variation in Gammatricula songi, a new species of Triculinae from China (Gastropoda: Rissoacea). Proceedings of the Academy of Natural Sciences of Philadelphia. 145: 107-145.