Columbia subject headings:
Industrial relations--United States--Handbooks, manuals, etc.
Labor laws and legislation--United States--Handbooks, manuals, etc.
Unfair labor practices--United States--Handbooks, manuals, etc.
Harvard subject headings:
Industrial relations--United States--Handbooks, manuals, etc.
Labor laws and legislation--United States--Handbooks, manuals, etc.
Unfair labor practices--United States--Handbooks, manuals, etc.
Princeton subject headings: