TY - CPAPER AU - Cristian Ovidiu Simion TI - ASPECTS CONCERNING THE ECONOMIC EFFICIENCY CORRELATED WITH THE STRUCTURE OF THE MACHINERY PARK, IN AN AGRICULTURAL UNIT CROP FROM ROMANIA T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 15th International Multidisciplinary Scientific GeoConference SGEM2015, ECOLOGY, ECONOMICS, EDUCATION AND LEGISLATION PY - 2015 DO - 10.5593/sgem2015/b53/s21.012 PB - Stef92 Technology ER -