Columbia subject headings:
Harvard subject headings:
German language--Political aspects--History--20th century--Congresses.
German language--Social aspects--Germany (West)--Congresses.
Heinrich-Heine-Universität Düsseldorf.
Nineteen sixty-eight, A.D.--Congresses.
Sociolinguistics--Germany (West)--Congresses.
Student movements--Germany (West)--Congresses.
Students--Political activity--Germany (West)--Congresses.
Princeton subject headings:
German language--Political aspects--History--20th century--Congresses.
German language--Social aspects--Germany (West)--Congresses.
Heinrich-Heine-Universität Düsseldorf.
Nineteen sixty-eight, A.D.--Congresses.
Sociolinguistics--Germany (West)--Congresses.
Student movements--Germany (West)--Congresses.
Students--Political activity--Germany (West)--Congresses.