Columbia subject headings:
Environmental policy--Cost effectiveness--Bibliography.
Environmental policy--United States--Bibliography.
Industrial hygiene--United States--Bibliography.
Work environment--United States--Bibliography.
Harvard subject headings:
Environmental policy--Cost effectiveness--Bibliography.
Environmental policy--United States--Bibliography
Industrial hygiene--United States--Bibliography of bibliographies.
Industrial hygiene--United States--Bibliography.
Work environment--United States--Bibliography.
Princeton subject headings:
Environmental policy--Cost effectiveness--Bibliography.
Environmental policy--United States--Bibliography.
Industrial hygiene--United States--Bibliography.
Work environment--United States--Bibliography.