Authors
Piotr Zieliński
Department of Hydrobiology, Institute of Biology, University of Białystok, Białystok, Poland
Elżbieta Jekatierynczuk-Rudczyk
Department of Hydrobiology, Institute of Biology, University of Białystok, Białystok, Poland
© 2010 Piotr Zieliński, Elżbieta Jekatierynczuk-Rudczyk, published by University of Gdańsk
This work is licensed under the Creative Commons License.