Columbia subject headings:
Harvard subject headings:
Comparative linguistics--Congresses.
German language--History--Congresses.
German literature--History and criticism--Congresses
Language and languages--Congresses
Language and languages--Grammars--Congresses.
Slavic languages--History--Congresses.
Princeton subject headings:
Comparative linguistics--Congresses.
German language--History--Congresses.
German literature--History and criticism--Congresses.
Language and languages--Congresses.
Language and languages--Grammars--Congresses.
Slavic languages--History--Congresses.