Ljungstrom, P. O. (1972). Taxonomical and ecological notes on the earthworm genus Udeina and a requiem for South-African Acanthodrilines. Pedobiologia. 12(2): 1-100.
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Ljungstrom, P. O.
1972
Taxonomical and ecological notes on the earthworm genus Udeina and a requiem for South-African Acanthodrilines