TY - CPAPER AU - K. Velchev AU - Emilia Georgieva TI - GROUND LEVEL OZONE AT THE SOUTHERN BULGARIAN BLACK SEA COAST FOR A TYPICAL SUMMER MONTH T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021, Energy and Clean Technologies PY - 2021 SP - 295 EP - 302 DO - 10.5593/sgem2021/4.1/s19.50 PB - STEF92 Technology ER -