Columbia subject headings:
China--Population--History--20th century.
Famines--China--History--20th century.
Food supply--China--History--20th century.
Harvard subject headings:
China--Population--History--20th century.
Famines--China--History--20th century.
Princeton subject headings:
China--Population--History--20th century.
Famines--China--History--20th century.
Food supply--China--History--20th century.