Columbia subject headings:
Harvard subject headings:
Baltic States--In literature--Congresses.
Baltic literature--History and criticism--Congresses.
German literature--Baltic States--History and criticism--Congresses.
Germans--Baltic States--History--18th century--Congresses.
Germans--Baltic States--History--19th century--Congresses.
Princeton subject headings:
Baltic States--In literature--Congresses.
Baltic literature--History and criticism--Congresses.
German literature--Baltic States--History and criticism--Congresses.
Germans--Baltic States--History--18th century--Congresses.
Germans--Baltic States--History--19th century--Congresses.