Columbia subject headings:
Harvard subject headings:
Drugs--Law and legislation--United States--History.
Food industry and trade--Government policy--United States--History.
Food law and legislation--United States--History.
Pharmaceutical industry--Government policy--United States--History.
Princeton subject headings:
Drugs--Law and legislation--United States--History.
Food industry and trade--Government policy--United States--History.
Food law and legislation--United States--History.
Pharmaceutical industry--Government policy--United States--History.