TY  - CPAPER
AU  - Andrzej Slaczka
AU  - Adam Wasilczyk
TI  - ULTRA CLEAN COAL FROM POLISH COAL DEPOSITS
T2  - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Energy and Clean Technologies
PY  - 2017
SP  - 659
EP  - 666
DO  - 10.5593/sgem2017/42/s17.082
PB  - STEF92 Technology
ER  -