TY - CPAPER AU - E. Pehlivan TI - BIOGAS PRODUCTION AS AN ENVIRONMENTALLY-FRIENDLY RENEWABLE ENERGY SOURCE T2 - 9th International Multidisciplinary Scientific GeoConference SGEM2009 PY - 2009 SP - 373 EP - 382 SN - 954-91818-1-2 PB - SGEM Scientific GeoConference ER -