Columbia subject headings:
Balkan Peninsula.
Europe--Economic conditions--1918-1945.
Europe--Politics and government--1918-1945.
Harvard subject headings:
Balkan Peninsula.
Europe--Economic conditions--1918-1945.
Europe--Politics and government--1914-
Europe--Politics and government--1918-1945.
Princeton subject headings:
Balkan Peninsula.
Europe--Economic conditions--1918-1945.
Europe--Politics and government--1914-.