TY - CPAPER AU - Jakub Chlopecký TI - MANAGERIAL VIEW OF THE DEPENDENCE OF SELECTED RAW MATERIALS ON EXTERNAL CONDITIONS T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Science and Technologies in Geology, Exploration and Mining PY - 2018 SP - 553 EP - 560 DO - 10.5593/sgem2018/1.3/s03.071 PB - STEF92 Technology ER -