Columbia subject headings:
Harvard subject headings:
Europe--Politics and government--1918-1945.
European federation
Gafencu, Grigore, 1892-1957.
International relations--History--20th century
Romania--Politics and government--1914-1944.
World politics--1945-1989
Princeton subject headings:
Europe--Politics and government--1918-1945.
Gafencu, Grigore, 1892-1957.
Romania--Politics and government--1914-1944.