Columbia subject headings:
Construction industry--Accidents--United States--Handbooks, manuals, etc.
Construction industry--United States--Safety measures--Handbooks, manuals, etc.
Ladders--Safety measures--Handbooks, manuals, etc.
Stairs--United States--Safety measures--Handbooks, manuals, etc.
Harvard subject headings:
Construction industry--Accidents--United States--Handbooks, manuals, etc.
Construction industry--United States--Safety measures--Handbooks, manuals, etc.
Ladders--Safety measures--Handbooks, manuals, etc.
Stairs--United States--Safety measures--Handbooks, manuals, etc.
Princeton subject headings:
Construction industry--Accidents--United States--Handbooks, manuals, etc.
Construction industry--United States--Safety measures--Handbooks, manuals, etc.
Ladders--Safety measures--Handbooks, manuals, etc.
Stairs--United States--Safety measures--Handbooks, manuals, etc.