Columbia subject headings:
Germany--Commerce--Iran.
Germany--Foreign economic relations--Iran.
Iran--Commerce--Germany.
Iran--Foreign economic relations--Germany.
Harvard subject headings:
Germany--Commerce--Iran--History.
Germany--Economic conditions--1918-1945.
Iran--Commerce--Germany--History.
Iran--Economic conditions--1918-
Princeton subject headings:
Germany--Commerce--Iran.
Germany--Foreign economic relations--Iran.
Iran--Commerce--Germany.
Iran--Foreign economic relations--Germany.