TY  - CPAPER
AU  - Jarosław Chećko
TI  - HARD COAL RESOURCES IN THE UPPER SILESIA COAL BASIN (POLAND) ACCORDING TO POLISH CLASSIFICATION AND INTERNATIONAL JORC CODE
T2  - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings19th, Science and Technologies in Geology, Exploration And Mining
PY  - 2019
SP  - 323
EP  - 330
DO  - 10.5593/sgem2019/1.3/s03.041
PB  - STEF92 Technology
ER  -