| author | date | title | journal / publication | Lock MA, Reynoldson TB | 1976 | The Role of Interspecific Competition in the Distribution of two Stream Dwelling Triclads, Crenobia alpina (Dana) and Polycelis felina (Dalyell), in North Wales | The Journal of Animal Ecology 45(2): 581-592 |
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| Crenobia alpina (Dana, 1766) | [with synonyms] | w | other research on this sp. | |
| Polycelis felina (Dalyell, 1814) | [with synonyms] | w | other research on this sp. |