Contamination caused by radium discharged with mine effluents into inland waters B. Michalik, M. Wysocka, S. Chalupnik, K. Skubacz, A. Mielnikow and L. Trzaski Radioprotection, 40 (2005) S503-S509 Published online: 17 June 2005 DOI: 10.1051/radiopro:2005s1-074