ASPECTS ON ECONOMIC POTENTIAL OF JIU VALLEY COALS.

Autor: BUIA, Grigore1 grigbuia@yahoo.com, LORINŢ, Csaba1 csabigeo@yahoo.com, LUPULEAC, Radu1 l.radu.f@gmail.com
Zdroj: Annals of the University of Petrosani Mining Engineering. 2013, Vol. 14, p81-88. 8p.
Databáze: Academic Search Ultimate