Columbia subject headings:
Agricultural industries--United States.
Agriculture and state--United States.
Food industry and trade--United States.
Lobbying--United States.
Pressure groups--United States.
Harvard subject headings:
Agricultural industries--United States
Agriculture and state--United States.
Food industry and trade--United States
Lobbying--United States
Pressure groups--United States
Princeton subject headings:
Agricultural industries--United States.
Agriculture and state--United States.
Food industry and trade--United States.
Lobbying--United States.
Pressure groups--United States.