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1Published 1997Subjects: “...Slavs, Southern History Congresses....”
Conference Proceeding Book -
2Published 1981“...Black Sea Coast History Congresses....”
Conference Proceeding Book -
3Published 1960“...Bulgaria History....”
Conference Proceeding Book -
4Published 1983“...Bulgaria History Congresses....”
Conference Proceeding Book -
5Published 1982“...Bulgaria Research History Congresses....”
Conference Proceeding Book