4.The Preparation of the Fulvic Acids From HNO_3 Oxidation Brown coal
5.Trial-production of a composite cement from cinder and ash of burnt lignite
6.BMS Technical Design Practice on 600MW Brown coal Fired Boiler
7.a hard wax obtained from lignite.
8.REGULARITIES OF SULFUR SEPARATION IN LIGNITE BURNING PROCESS,ETHIOPIA
9.Characteristics and Significance of Resinites in Brown Coal of Baise Basin
10.Study of Production of Active Carbon from Lignite by Rapid-Carbonization and Activation