Columbia subject headings:
Food--Labeling--United States.
Marks of origin--United States.
Meat--Labeling--United States.
Harvard subject headings:
Food--Labeling--United States.
Marks of origin--United States.
Meat--Labeling--United States.
Princeton subject headings:
Food--Labeling--United States.
Marks of origin--United States.
Meat--Labeling--United States.