Columbia subject headings:
Harvard subject headings:
Germany--Politics and government--1918-1933
Labor unions and education--Germany--History--20th century.
Working class--Education (Higher)--Germany--History--20th century.
Princeton subject headings:
Germany--Politics and government--1918-1933.
Labor unions--Germany--History--20th century.
Working class--Education (Higher)--Germany--History--20th century.