Columbia subject headings:
China--History--Xi'an Incident, 1936.
Zhou, Enlai, 1898-1976.
Harvard subject headings:
China--History--Xi'an Incident, 1936
Zhou, Enlai, 1898-1976
Princeton subject headings:
China--History--Xi'an Incident, 1936.
Zhou, Enlai, 1898-1976.