Viorel Ion. "BIOMASS YIELD AT SUNFLOWER UNDER DIFFERENT SOWING AND GROWING CONDITIONS FROM SOUTH ROMANIA." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 15th International Multidisciplinary Scientific GeoConference SGEM2015, ENERGY AND CLEAN TECHNOLOGIES, 2015. https://doi.org/10.5593/sgem2015/b41/s17.009