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The 90 Sr and 137 Cs contamination in Polish surface waters has been monitoring since 1994. Surface water samples from six lakes and the Vistula and Oder Rivers were collected in spring and autumn 2012 and 2013. The mean 90 Sr and 137 Cs concentrations were 3.92 ± 0.40 and 4.49 ± 2.00 mBq L −1 , respectively. Correlations were identified...
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