Columbia subject headings:
Civil service--Health and hygiene--United States.
Fire fighters--Health and hygiene--United States.
Workers' compensation--Law and legislation--United States.
Harvard subject headings:
Civil service--Health and hygiene--United States.
Fire fighters--Health and hygiene--United States.
Workers' compensation--Law and legislation--United States.
Princeton subject headings:
Civil service--Health and hygiene--United States.
Fire fighters--Health and hygiene--United States.
Workers' compensation--Law and legislation--United States.