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Soňa Keresztesová
Department of Ecology and Environmental Sciences, Faculty of Natural Sciences, Constantine the Philosopher Uni-versity in Nitra, Tr. A. Hlinku 1, 949 74 Nitra, Slovak Republic
Ján Klein
Department of Ecology and Environmental Sciences, Faculty of Natural Sciences, Constantine the Philosopher Uni-versity in Nitra, Tr. A. Hlinku 1, 949 74 Nitra, Slovak Republic
Zdenka Rózová
Department of Ecology and Environmental Sciences, Faculty of Natural Sciences, Constantine the Philosopher Uni-versity in Nitra, Tr. A. Hlinku 1, 949 74 Nitra, Slovak Republic