Columbia subject headings:
Chain stores--United States.
Grocery trade--United States.
Produce trade--Law and legislation--United States.
Produce trade--United States.
Harvard subject headings:
Chain stores--United States
Food industry and trade--United States
Grocery trade--United States
Produce trade--United States
Princeton subject headings:
Chain stores--United States.
Grocery trade--United States.
Produce trade--United States.