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1. Statisticheski godishnik na Narodnata Republika Bŭlgarii͡a
   HA1621 .S79 1943-1946
2. Statisticheski godishnik na Narodna Republika Bŭlgarii͡a
   HA1621 .S79 1956
3. Statisticheski godishnik na Narodna Republika Bŭlgarii͡a
   HA1621 .S79 1960
4. Statisticheski godishnik na Republika Bŭlgarii͡a
   HA1621 .S79 1990
5. Statisticheski godishnik = Statistical yearbook
   HA1621 .S79 1993