Deposits of coal slurry as secondary resources of hard coal

by Blaschke, Wiesław, Baic, Ireneusz, Sobko, Wojciech, Witkowska-Kita, Beata, Sobko, Wojciech, Witkowska-Kita, Beata
Source: 1. Acta Montanistica Slovaca 1. Roč. 23, č. 3 (2018), s. 233-244 1. 1335-1788