Bulgaria past & present : studies on history, literature, economics, sociology, folklore, music & linguistics : proceedings of the Second International Conference on Bulgarian Studies held at Druzhba, Varna, june 13-17, 1978 /
International Conference on Bulgarian Studies(2nd1978Druzba, Varna.
Bŭlgarska akademii︠a︡ na naukite.
Sofia Pub. House of the Bulgarian Academy of Sciences
1982
Includes bibliographical references