Columbia subject headings:
Harvard subject headings:
China--History--1912-1928.
China--History--Warlord period, 1916-1928.
Shanxi Sheng (China)--History.
Princeton subject headings:
China--History--1912-1928.
China--History--Warlord period, 1916-1928.
Shanxi Sheng (China)--History.