3

Organic sulphur in the hard coal of the stratigraphic layers of the Upper Silesian coal basin

Year:
2002
Language:
english
File:
PDF, 416 KB
english, 2002
4

The Effect of Pre-Wetting With Flotation Reagents on the Surface Energy of Coals

Year:
1994
Language:
english
File:
PDF, 187 KB
english, 1994