Columbia subject headings:
Harvard subject headings:
China--Foreign relations--1644-1912
China--History, Military--1644-1912.
China--History--Foreign intervention, 1857-1861
China--History--Opium War, 1840-1842
Princeton subject headings:
China--Foreign relations--1644-1912.
China--History, Military--1644-1912.
China--History--Foreign intervention, 1857-1861.
China--History--Opium War, 1840-1842.