Columbia subject headings:
Harvard subject headings:
China--History--May Thirtieth movement, 1925--Sources.
Guangzhou (China)--History--Sources.
Han-kʻow (China)--History--Sources.
Princeton subject headings:
China--History--May Thirtieth movement, 1925--Sources.
Guangzhou (China)--History--Sources.
Hankou (Wuhan, China)--History--Sources.