Columbia subject headings:
Harvard subject headings:
Concert of Europe.
Europe--Politics and government--1871-1918.
International organization.
Princeton subject headings:
Concert of Europe.
Crete (Greece)--History--19th century.
Europe--Foreign relations--1871-1918.
Europe--Foreign relations--Turkey.
Greco-Turkish War, 1897.
Greece--Foreign relations--1863-1917.
Turkey--Foreign relations--Europe.