Authors
Janusz Żbikowski
Department of Hydrobiology, Institute of Ecology and Environmental Protection, Toruń, Poland
Jarosław Kobak
Department of Invertebrate Zoology, Institute of General and Molecular Biology, Toruń, Poland
© 2010 Janusz Żbikowski, Jarosław Kobak, published by University of Gdańsk
This work is licensed under the Creative Commons License.