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Yamaguchi, H. (1953). Studies on the Aquatic Oligochaeta of Japan: Ⅵ. A Systematic Report, with Some Remarks on the Classification and Phylogeny of the Oligochaeta (With 1 Plate, 5 Tables and 25 Text-figures). Journal of the Faculty of Science Hokkaido University, Series V. Zoology. 11(2): 277-342.
Yamaguchi, H. (1953). Studies on the Aquatic Oligochaeta of Japan: Ⅵ. A Systematic Report, with Some Remarks on the Classification and Phylogeny of the Oligochaeta (With 1 Plate, 5 Tables and 25 Text-figures). Journal of the Faculty of Science Hokkaido University, Series V. Zoology. 11(2): 277-342.
