Columbia subject headings:
Industrial hygiene--Law and legislation--United States.
Industrial safety--Law and legislation--United States.
United States. Occupational Safety and Health Administration.
Harvard subject headings:
Industrial hygiene--Law and legislation--United States
Industrial safety--Law and legislation--United States
United States. Occupational Safety and Health Administration.
Princeton subject headings:
Industrial hygiene--Law and legislation--United States.
Industrial safety--Law and legislation--United States.
United States. Occupational Safety and Health Administration