Kobayashi, S. (1934). Three new Korean earthworms belonging to the genus Pheretima, together with the wider range of the distribution of Pheretima hilgendorfi (Michaelsen. Journal of Chosen Natural History Society. 19: 1-11.
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Kobayashi, S.
1934
Three new Korean earthworms belonging to the genus Pheretima, together with the wider range of the distribution of Pheretima hilgendorfi (Michaelsen