Institution: | 1. T.G. Masaryk Water Research Institute, , 160 62 Prague 6, Czech Republic;2. Agency for Nature Conservation and Landscape Protection of the Czech Republic, , 140 00 Praha 4, Czech Republic;3. Faculty of Education of the University of West Bohemia, Department of Biology, , 306 19 Plzeň, Czech Republic;4. Mining Museum P?íbram, , 261 01 P?íbram VI, Czech Republic |