Columbia subject headings:
Bulgarian literature--To 1762--Congresses.
Church Slavic language--Bulgarian recension--Congresses.
Harvard subject headings:
Bulgarian literature--To 1762--Congresses.
Church Slavic language--Bulgarian recension--Congresses.
Princeton subject headings:
Bulgarian literature--To 1762--Congresses.
Church Slavic language--Bulgarian recension--Congresses.
Comparative literature--Bulgarian and Slavic--Congresses.
Comparative literature--Slavic and Bulgarian--Congresses.
Painting, Bulgarian--Congresses.