Columbia subject headings:
Eastern question (Far East)
Eastern question.
Europe--Politics and government--1871-1918.
Harvard subject headings:
Eastern question (Far East)
Eastern question.
Europe--Politics and government--1871-1918.
World War, 1914-1918--Causes
Princeton subject headings:
Eastern question (Far East)
Eastern question.
Europe--Politics and government--1871-1918.