1
Published: 1982
Related title: Părvi meždunaroden kongres po bălgaristika
Book
2
3
4
Published: 1989
Related title: Vtori meždunaroden kongres pobălgaristika
Book
5
Published: 1981
Related title: Părvi meždunaroden kongres po bălgaristika
Book
6
Published: 1982
Related title: Părvi meždunaroden kongres po bălgaristika
Book