Columbia subject headings:
Harvard subject headings:
Agriculture and state--United States.
Agriculture--Economic aspects--United States
Food industry and trade--Political aspects--United States.
United States--Commercial policy.
United States--Economic policy--1981-1993.
Princeton subject headings:
Agriculture and state--United States.
Agriculture--Economic aspects--United States.
Food industry and trade--Political aspects--United States.
United States--Commercial policy.
United States--Economic policy--1981-1993.