TY - CPAPER AU - Dmitriy Zhukov TI - PERSPECTIVES FOR USING IRON-MANGANESE CONCRETIONS TO IMPROVE THE STATE OF THE BALIC SEA ENVIRONMENT T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 15th International Multidisciplinary Scientific GeoConference SGEM2015, ECOLOGY, ECONOMICS, EDUCATION AND LEGISLATION PY - 2015 DO - 10.5593/sgem2015/b51/s20.083 PB - Stef92 Technology ER -