Columbia subject headings:
Cut flowers--United States--Marketing.
Horticultural products industry--United States.
Horticultural products--Economic aspects--United States.
Vegetables--Law and legislation--United States.
Harvard subject headings:
Cut flowers--United States--Marketing.
Horticultural products industry--United States.
Horticultural products--Economic aspects--United States.
Vegetables--Law and legislation--United States.
Princeton subject headings: