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2. Methods for chemical analysis of fresh waters;Golterman;IBP Handb.,1971
3. Notes on the rotifers of coal mine water in Eastern Poland;Radwan;Hydrobiologia,1983
4. Rotatorien als Indikatoren für den Chemismus von Binnensalzgewässern;Ruttner-Kolisko,1971
5. The development of ichtyofauna in dam reservoirs with small variations in water levels;Wajdowicz;Acta Hydrobiol.,1964