| Citation | Bergman, E., 1991. Changes in abundance of two percids, Perca fluviatilis and Gymnocephalus cernuus, along the productivity gradient: relations to feeding strategies and competitive abilities. Can. J. Fish. Aquat. Sci. 48:536-545. |
| DOI | http://dx.doi.org/ |
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| Ref. No. | 57181 |
| Language | English |
| Usage | not used yet |
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