Columbia subject headings:
Harvard subject headings:
German language--Lexicology--Congresses.
German language--Study and teaching--Foreign countries--Congresses.
German language--Study and teaching--Foreign speakers--Congresses.
German language--Vocabulary--Congresses.
Princeton subject headings:
German language--Lexicology--Congresses.
German language--Study and teaching--Foreign countries--Congresses.
German language--Study and teaching--Foreign speakers--Congresses.
German language--Vocabulary--Congresses.