Columbia subject headings:
Harvard subject headings:
Education--Germany--History--20th century--Congresses.
Universities and colleges--Germany--History--20th century--Congresses.
Princeton subject headings:
Education, Higher--Political aspects--Germany--History--20th century--Congresses.
Higher education and state--Germany--History--20th century--Congresses.
Learning and scholarship--Germany--History--20th century--Congresses.