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- BULGARIAN ACADEMY OF SCIENCES
http://www.bas.bg - SCIENCE AND EDUCATION FOR SMART GROWTH OPERATIONAL PROGRAMME EXECUTIVE AGENCY
http://sf.mon.bg - MINISTRY OF EDUCATION AND SCIENCE
https://www.mon.bg - THE MINISTRY OF ENVIRONMENT AND WATER
https://www.moew.government.bg - EXECUTIVE ENVIRONMENT AGENCY (EXEA)
http://eea.government.bg - REGIONAL INSPECTORATE OF ENVIRONMENT AND WATER
https://www.riew-sofia.org - SU “ST. K. OHRIDSKI
https://www.uni-sofia.bg - TU – SOFIA
https://tu-sofia.bg - UMG “ST. IVAN RILSKI”
http://mgu.bg