Columbia subject headings:
Abdülhamid II, Sultan of the Turks, 1842-1918.
Intelligence service--Turkey.
Secret service--Turkey.
Spies--Turkey--History.
Turkey--Politics and government--1878-1909.
Harvard subject headings:
Abdülhamid II, Sultan of the Turks, 1842-1918.
Intelligence service--Turkey.
Secret service--Turkey.
Spies--Turkey--History.
Turkey--Politics and government--1878-1909.
Princeton subject headings:
Abdülhamid II, Sultan of the Turks, 1842-1918.
Intelligence service--Turkey.
Secret service--Turkey.
Spies--Turkey--History.
Turkey--Politics and government--1878-1909.