Columbia subject headings:
Food industry and trade--Government policy--European Union countries.
Food industry and trade--Government policy--United States.
Produce trade--Government policy--European Union countries.
Produce trade--Government policy--United States.
Harvard subject headings:
Princeton subject headings:
Food industry and trade--Government policy--European Union countries.
Food industry and trade--Government policy--United States.
Produce trade--Government policy--European Union countries.
Produce trade--Government policy--United States.