Columbia subject headings:
Harvard subject headings:
Discrimination in employment--Law and legislation--United States
Employee selection--Law and legislation--United States.
Labor laws and legislation--United States
Labor unions--Organizing--United States
Unfair labor practices--United States.
Princeton subject headings:
Employee selection--Law and legislation--United States.
Labor laws and legislation--United States.
Labor unions--Organizing--United States.
Unfair labor practices--United States.