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| | T&K-ryhmä |
 | | (4) Helminen, H., Hirvonen, A. and Sarvala, J. 1992: Impact of fishing on vendace (Coregonus albula) population in Lake Pyhäjärvi, SW Finland. |
 | | (17) Sydänoja A., Helminen, H. and Sarvala, J. 1995: Vertical migrations of vendace (Coregonus albula) in a thermally unstratified lake (Pyhäjärvi, SW Finland). |
 | | (17) Sydänoja, A.,Helminen, H. and Sarvala, J. 1993: Vertical migrations of vendace (Coregonus albula) in a thermally unstratified lake (Pyhäjärvi, SW Finland). |
| www.sci.utu.fi /losyk-yhteistyo/tk-3.htm (3242 words) |
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