Columbia subject headings:
Harvard subject headings:
Agricultural price supports--Law and legislation--United States.
Dairy laws--United States.
Dairy products--Marketing--Government policy--United States.
Dairying--Government policy--United States.
Farm produce--Marketing--Government policy--United States.
Princeton subject headings:
Agricultural price supports--United States.
Dairy products--Marketing--Government policy--United States.
Dairying--Government policy--United States.
Farm produce--Marketing--Government policy--United States.