TY  - CPAPER
AU  - Ivaylo Ivanov
TI  - ENVIRONMENTAL QUALITY AT REGIONAL LEVEL: THE CASE STUDY OF BULGARIA
T2  - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021, Ecology, Economics, Education and Legislation
PY  - 2021
SP  - 383
EP  - 390
DO  - 10.5593/sgem2021/5.1/s21.085
PB  - STEF92 Technology
ER  -