Columbia subject headings:
Collective bargaining--Government employees--United States--Congresses.
Government employee unions--Law and legislation--United States--Congresses.
Government employee unions--United States--Congresses.
Harvard subject headings:
Collective bargaining--Government employees--United States--Congresses.
Government employee unions--Law and legislation--United States--Congresses.
Government employee unions--United States--Congresses.
Princeton subject headings:
Collective bargaining--Government employees--United States--Congresses.
Government employee unions--Law and legislation--United States--Congresses.
Government employee unions--United States--Congresses.