Columbia subject headings:
Industrial policy--United States--Congresses.
Industrial relations--United States--Congresses.
Labor policy--United States--Congresses.
Harvard subject headings:
Industrial policy--United States--Congresses
Industrial relations--United States--Congresses
Labor policy--United States--Congresses.
Princeton subject headings:
Industrial relations--United States--Congresses.
Labor policy--United States--Congresses.