TY - CPAPER AU - Roberta Gridan TI - ECOLOGICAL TOURISM IN ROMANIA - MOUNTAIN BIKING, AN OPPORTUNITY FOR SUSTAINABLE DEVELOPMENT ON SEMENIC MOUNTAIN AREA 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/b51/s20.028 PB - Stef92 Technology ER -