bfb80c29_National_responses___ИАОС__European_legislation
[National legislation] The Atmospheric Air Cleanliness Act (published in the Darzhaven Vestnik Official Gazette, Issue No. 45 dated 28 May 1996 and last amended in the Darzhaven Vestnik Issue No. 112 dated 23 December 2003) Order No. 7/99 on Air Quality Assessment and Management [European legislation] 
The Framework Directive 96/62ЕС on air quality assessment and management
National responses — ИАОС
European legislation