TY - CPAPER AU - Timur Chis TI - THE ROUMANIAN OIL CLASIFFICATIONS T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; SGEM2011 11th International Multidisciplinary Scientific GeoConference PY - 2011 DO - 10.5593/sgem2011/s05.109 PB - Stef92 Technology ER -