TY - JOUR L1 - http://czasopisma.pan.pl/Content/105617/PDF/10267-Volume62_Issue4-11_paper.pdf L2 - http://czasopisma.pan.pl/Content/105617 PY - 2017 IS - No 4 DO - 10.1515/amsc-2017-0058 A1 - Wierzchowski, Krzysztof A1 - Chećko, Jarosław A1 - Pyka, Ireneusz PB - Committee of Mining PAS DA - 2017 T1 - Variability of Mercury Content in Coal Matter From Coal Seams of The Upper Silesia Coal Basin UR - http://czasopisma.pan.pl/dlibra/publication/edition/105617 T2 - Archives of Mining Sciences ER -