Authors
Tomasz Mieczan
Department of Hydrobiology, University of Life Sciences in Lublin, Poland
Dorota Nawrot
Department of Hydrobiology, University of Life Sciences in Lublin, Poland
© 2012 Tomasz Mieczan, Dorota Nawrot, published by University of Gdańsk
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.