Columbia subject headings:
Cereal products.
Cereals, Prepared.
Food industry and trade--United States.
Industrial concentration--United States.
Harvard subject headings:
Cereal products industry--United States.
Cereal products.
Cereals, Prepared.
Food industry and trade--United States
Industrial concentration--United States.
Princeton subject headings:
Cereal products.
Cereals, Prepared.
Food industry and trade--United States.
Industrial concentration--United States.