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![]() Date: 2007-10-10 03:55:12Estonia Oil shale industry Shale oil extraction Kohtla-Järve Paul Kogerman Shale oil Estonian Soviet Socialist Republic Oil shale in Estonia Galoter process Oil shale Petroleum Europe | Source URL: www.kirj.eeDownload Document from Source WebsiteFile Size: 19,60 KBShare Document on Facebook |