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© 2010 Michał Nowak, Włodzimierz Popek, Wojciech Jagusiak, Stanisław Deptuła, Jakub Popek, Krzysztof Tatoj, Krzysztof Klęczar, Piotr Epler, published by Stanisław Sakowicz Inland Fisheries Institute
This work is licensed under the Creative Commons License.