Columbia subject headings:
Industrial safety--United States--Handbooks, manuals, etc.
Personal protective equipment--United States--Handbooks, manuals, etc.
Harvard subject headings:
Industrial safety--United States--Handbooks, manuals, etc.
Protective clothing--United States--Handbooks, manuals, etc.
Princeton subject headings:
Industrial safety--United States--Handbooks, manuals, etc.
Personal protective equipment--United States--Handbooks, manuals, etc.