First Page | Document Content | |
---|---|---|
![]() Date: 2009-08-19 08:18:26Oil shale Economic geology Petroleum production Narva Mining Oil shale industry Galoter process Shale oil extraction Eesti Energia Petroleum Energy Energy in Estonia | Source URL: www.kirj.eeDownload Document from Source WebsiteFile Size: 295,44 KBShare Document on Facebook |