Properties and structure of hard coals from the borehole Niedobczyce IG-1 in Rybnik Coal District, Upper Silesian Coal Basin, their petrographic and group constituents. 1. Variations in properties of the coals along the depth of the borehole
S. Jasie/'nko, A. Matuszewska, A. JohnVolume:
41
Year:
1995
Language:
english
Pages:
14
DOI:
10.1016/0378-3820(94)00096-c
File:
PDF, 613 KB
english, 1995