Columbia subject headings:
Food consumption--China.
Food supply--Government policy--China.
Grain trade--China.
Grain trade--Government policy--China.
Harvard subject headings:
Food consumption--China.
Food supply--Government policy--China
Grain trade--China.
Grain trade--Government policy--China.
Princeton subject headings:
Food consumption--China.
Food supply--Government policy--China.
Grain trade--China.
Grain trade--Government policy--China.