Statistical yearbook of Republic of Bulgaria in infographics
Regions and distrits in Bulgaria : 1997-2001
Statistical journal
Bulgarie : 1991
Populatia româniei : cu o anexa cuprinzând populatia capitalei dupa datele recensamântului general al populatiei din 29 Decemvrie 1930
Statistical yearbook of Republic of Bulgaria
Foreign trade of the Republic of Bulgaria