About this article
Published Online: Apr 08, 2010
Page range: 111 - 117
DOI: https://doi.org/10.2478/v10009-010-0008-6
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Bielańska-Grajner, Irena
Department of Hydrobiology, University of SilesiaKatowice, Poland
Poznańska, Małgorzata
Department of Invertebrate Zoology, Nicolaus Copernicus UniversityToruń, Poland