Columbia subject headings:
Industrial hygiene--Law and legislation--United States--Cost effectiveness--Congresses.
Industrial safety--Law and legislation--United States--Cost effectiveness--Congresses.
Harvard subject headings:
Industrial hygiene--Law and legislation--United States--Cost effectiveness--Congresses.
Industrial safety--Law and legislation--United States--Cost effectiveness--Congresses.
Princeton subject headings:
Industrial hygiene--Law and legislation--United States--Cost effectiveness--Congresses.
Industrial safety--Law and legislation--United States--Cost effectiveness--Congresses.