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Some factors affecting the distribution of Crenobia alpina (Dana), Polycelis felina (Dalyell) and Phagocata vitta (Dugès) (Platyhelminthes) in Caernarvonshire, North Wales |
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| Authors: | JOHN F. WRIGHT |
| Affiliation: | Department of Zoology, University College of North Wales, Bangor |
| Abstract: | |
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