Columbia subject headings:
Harvard subject headings:
Asia--Politics and government
India--Politics and government--1857-1919.
Secret service--Asia--History.
World War, 1914-1918--Asia.
World War, 1914-1918--India
Princeton subject headings:
Asia--Politics and government.
India--Politics and government--1857-1919.
Secret service--Asia--History.
World War, 1914-1918--Asia.
World War, 1914-1918--India.