Taxonomy and geographical distribution of Dugesia japonica and D. ryukyuensis in the Far East

Kawakatsu, M., Oki, I., & Tamura, S. (1995). Taxonomy and geographical distribution of Dugesia japonica and D. ryukyuensis in the Far East. In Biology of Turbellaria and some Related Flatworms (pp. 55–61). Springer Netherlands. https://doi.org/10.1007/978-94-011-0045-8_10