TY - CPAPER AU - Maria-Mihaela Balint TI - USING BIO-FERTILIZERS IN ECOLOGICAL AGRICULTURE - SAFE AND CHEAP ALTERNATIVES FOR CHEMICAL AND CONVENTIONAL FERTILIZERS T2 - 14th International Multidisciplinary Scientific GeoConference SGEM 2014, Nano, Bio, Green and Space Technologies for a Sustainable Future, Vol. 14, Book 6, Volume 1 PY - 2014 DO - 10.5593/sgem2014/b61/s25.080 PB - Stef92 Technology ER -