- Speech about Bulgaria by Todor Zhivkov, 1981
- Greater Bulgaria, 1878-1909 (University of Hawaii) by Faith G Paul, 1976
- 125 Years Ministry of Defense of the Republic of Bulgaria by Public Relations Dept., 2003
- New Bulgaria by J. Lewis Farley, 1880
- The origin, development and collapse of communism in Bulgaria, 1944-1990 by Adam GlapinÌski, 1994
- Democracy in Bulgaria: Essence, form and content by Boris P Spasov, 1967
- Political and social democracy in Bulgaria by Boris P Spasov, 1963
- The speech of Vassil Kolarov, Provisional President of the People's Republic Bulgaria: Delivered on November 5, 1946 in the Constituent Assembly by Vasil Petrov Kolarov, 1947
- Bulgaria and Balkan security (USAWC strategy research project) by Krassimir Grozdev, 2000
- East European leadership list: A list of leading officeholders in the communist parties and governments of the following countries: Albania, Bulgaria, ... (Radio Free Europe Research. supplement)
- The effort of the Entente and of the Central Powers to conclude an alliance with Bulgaria by Jane Seydell, 1934
- Twelve years Ì•study of the Eastern question in Bulgaria: Being a revised edition of "A residence in Bulgaria." by Stanislas Graham Bower St. Clair, 1877
- Seventh anniversary of Bulgaria's liberation from fascism and imperialist yoke: Report delivered at the official meeting held on September 8, 1951 at the National Theatre by Vŭlko Chervenkov, 1951
- Human rights and democratization in Bulgaria (SuDoc Y 4.SE 2:H 88/2)
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