Columbia subject headings:
China--Foreign relations--1644-1912.
China--Officials and employees, Alien.
Detring, Gustav, 1842-1913.
Germans--China.
Li, Hongzhang, 1823-1901.
Harvard subject headings:
China--Foreign relations--1644-1912
China--Officials and employees, Noncitizen
Detring, Gustav, 1842-1913.
Germans--China.
Li, Hongzhang, 1823-1901
Princeton subject headings:
China--Foreign relations--1644-1912.
China--Officials and employees, Noncitizen.
Detring, Gustav, 1842-1913.
German--China.
Li, Hongzhang, 1823-1901.