Columbia subject headings:
Anti-Nazi movement.
Frankfurt am Main (Germany)--Politics and government.
Working class--Germany--Frankfurt am Main.
Harvard subject headings:
Anti-Nazi movement.
Frankfurt am Main (Germany)--Politics and government.
Working class--Germany--Frankfurt am Main.
Princeton subject headings:
Anti-Nazi movement.
Frankfurt am Main (Germany)--Politics and government.
Working class--Germany--Frankfurt am Main.