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| | The Planktonic Ciliate Project Online - References |
 | | Agatha S (unpubl) Morphology, infraciliature, and ecology of some planktonic and tychoplanktonic ciliates (Protozoa, Ciliophora) from coastal waters of the North Sea. |
 | | Agatha S, Riedel-Lorjé JC (1997) Morphology, infraciliature, and ecology of halteriids and strombidiids (Ciliophora, Oligotrichea) from coastal brackish water basins. |
 | | Petz W, Song W, Wilbert N (1995) Taxonomy and ecology of the ciliate fauna (Protozoa, Ciliophora) in the endopelagial and pelagial of the Weddell Sea, Antarctica. |
| www.liv.ac.uk /www/ciliate/refs.htm (988 words) |
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