Columbia subject headings:
Hazardous substances--Handbooks, manuals, etc.
Hazardous substances--Law and legislation--Handbooks, manuals, etc.
Harvard subject headings:
Hazardous substances--Handbooks, manuals, etc.
Hazardous substances--Law and legislation--Handbooks, manuals, etc.
Princeton subject headings:
Hazardous substances--Handbooks, manuals, etc.
Hazardous substances--Law and legislation--Handbooks, manuals, etc.