- Bulgaria Online
 - News and information about Bulgaria, navigation and communication services. In Bulgarian and English. - World Factbook: Bulgaria
- Provides information on the economy, geography, population, and government.
- U.S. Library of Congress Country Study - Bulgaria
- Informative introduction to the country and its people; includes sections on government, history, society and culture.
- Infoplease: Bulgaria
- Concise guide to geography, history, government, culture, statistics, and current events.
- FAQ - About Bulgaria
- All about Bulgaria [cs.columbia.edu]
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