Sims, R. W. (1982). Revision of the eastern African earthworm genus Polytoreutus (Eudrilidae: Oligochaeta). Bulletin of British Museum (Natural History). 43: 253-298.
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Sims, R. W.
1982
Revision of the eastern African earthworm genus Polytoreutus (Eudrilidae: Oligochaeta)