Columbia subject headings:
Grain--Inspection--United States--Periodicals.
Grain--Standards--United States--Periodicals.
Meat industry and trade--Government policy--United States--Periodicals.
United States. Grain Inspection, Packers, and Stockyards Administration--Periodicals.
Harvard subject headings:
Grain--Inspection--United States--Periodicals.
Grain--Standards--United States--Periodicals.
Meat industry and trade--Government policy--United States--Periodicals.
United States. Grain Inspection, Packers, and Stockyards Administration--Periodicals.
Princeton subject headings: