Columbia subject headings:
Harvard subject headings:
Schools of sociology--Germany (West)--History--20th century.
Schools of sociology--Germany--History--20th century.
Sociology--Germany (West)--History.
Sociology--Germany--History
Princeton subject headings:
Schools of sociology--Germany (West)--History--20th century.
Schools of sociology--Germany--History--20th century.
Sociology--Germany (West)--History.
Sociology--Germany--History.