Columbia subject headings:
Dairy laws--Northeastern States.
Dairy products industry--Law and legislation--Northeastern States.
Interstate agreements--Northeastern States.
Harvard subject headings:
Dairy laws--Northeastern States.
Dairy products industry--Law and legislation--Northeastern States.
Interstate agreements--Northeastern States.
Princeton subject headings:
Dairy laws--Northeastern States.
Dairy products industry--Law and legislation--Northeastern States.
Interstate agreements--Northeastern States.