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1Published 1987Subjects: “...Bulgarian language History Congresses....”
Conference Proceeding Book -
2Published 1983Subjects: “...Bulgarian literature History and criticism Congresses....”
Conference Proceeding Book -
3Published 1980Subjects: “...Church Slavic literature Bulgaria History and criticism Congresses....”
Book -
4Published 1966“...Balkan Peninsula History....”
Book -
5
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6Published 1976“...Thrace History To 1362 Congresses....”
Book -
7Published 1982“...Bulgaria Research History Congresses....”
Conference Proceeding Book