Columbia subject headings:
German language--18th century--Congresses.
German language--Jargon--History--18th century--Congresses.
Languages, Modern--Study and teaching--Germany--History--18th century--Congresses.
Harvard subject headings:
German language--History--18th century--Congresses.
German language--History--Congresses.
German language--Jargon--History--18th century--Congresses.
Languages, Modern--Study and teaching--Germany--History--18th century--Congresses.
Princeton subject headings:
Enlightenment--Congresses.
Languages in contact--Germany--History--18th century--Congresses.
Languages, Modern--Study and teaching--Germany--History--18th century--Congresses.
Multilingualism--Germany--History--18th century--Congresses.