Columbia subject headings:
Harvard subject headings:
Frankfurt am Main (Germany)--Politics and government--20th century.
Nineteen sixty-eight, A.D.--Political aspects--Germany--Frankfurt am Main--History.
Student movements--Germany--Frankfurt am Main--History.
Princeton subject headings:
Frankfurt am Main (Germany)--Politics and government--20th century.
Nineteen sixty-eight, A.D.--Political aspects--Germany--Frankfurt am Main--History.
Student movements--Germany--Frankfurt am Main--History.