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 |
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| Zdroj: | Annals of the University of Petrosani Mining Engineering. 2013, Vol. 14, p81-88. 8p. |
| Databáze: | Academic Search Ultimate |
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