Columbia subject headings:
Harvard subject headings:
Anarchism--Germany--History--20th century.
Föderation der Kommunistischen Anarchisten Deutschlands‏--History.
Germany--History--1918-1933--Sources.
Syndicalism--Germany--History--20th century.
Princeton subject headings:
Anarchism--Germany--History--20th century.
Föderation der Kommunistischen Anarchisten Deutschlands‏--History.
Germany--History--1918-1933--Sources.
Syndicalism--Germany--History--20th century.