Columbia subject headings:
Harvard subject headings:
China--History--Movement To Protect The Constitution, 1917-1923--Sources.
China--History--Warlord period, 1916-1928--Sources.
Feng, Guozhang, 1859-1919
Princeton subject headings:
China--History--Movement To Protect The Constitution, 1917-1923--Sources.
China--History--Warlord period, 1916-1928--Sources.
Feng, Guozhang, 1859-1919.