TY - CPAPER AU - Monika Súľovská TI - SOIL IMPROVING BY GRAVEL COLUMNS T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Science and Technologies in Geology, Exploration and Minining PY - 2018 SP - 653 EP - 660 DO - 10.5593/sgem2018/1.2/s02.083 PB - STEF92 Technology ER -