Columbia subject headings:
Harvard subject headings:
China--Economic conditions--20th century.
China--Politics and government--20th century
China--Population--History--20th century.
China--Social conditions--20th century.
Famines--China--History--20th century.
Food supply--China--History--20th century.
Princeton subject headings:
China--Economic conditions--20th century.
China--Politics and government--20th century.
China--Population--History--20th century.
China--Social conditions--20th century.
Famines--China--History--20th century.
Food supply--China--History--20th century.