Kogerman, P. N.2007-07-102007-07-101925Est.A-12547http://hdl.handle.net/10062/3045engCC0 1.0 UniversalopenAccesspõlevkivitööstusEestiEstonica kogupõlevkivi20. saj. 1. poolseparaadidThe present status of the oil-shale industry in EstoniaBook