Columbia subject headings:
Hazardous substances--Transportation--Law and legislation--United States.
Hazardous waste sites--Location--Law and legislation--United States.
Hazardous waste treatment facilities--Law and legislation--United States.
Harvard subject headings:
Hazardous substances--Transportation--Law and legislation--United States--Congresses.
Hazardous waste sites--Location--Law and legislation--United States--Congresses.
Hazardous waste treatment facilities--Law and legislation--United States--Congresses.
Princeton subject headings: