1
Published: 1988
Superior document: Enciklopedija Bălgarija 6
2
Published: 1982
Superior document: Enciklopedija Bălgarija 3
3
Published: 1978
Superior document: Enciklopedija Bălgarija 1
4
Published: 1981
Superior document: Enciklopedija Bălgarija 2
5
Published: 1986
Superior document: Enciklopedija Bălgarija 5
6
Published: 1984
Superior document: Enciklopedija Bălgarija 4
7
Published: 1996
Superior document: Enciklopedija Bălgarija 7
8