Columbia subject headings:
Manpower policy--Research--United States--Evaluation--Congresses.
Occupational training--Research--United States--Evaluation--Congresses.
Harvard subject headings:
Manpower policy--Research--United States--Evaluation--Congresses.
Occupational training--Research--United States--Evaluation--Congresses.
Princeton subject headings:
Manpower policy--Research--United States--Evaluation--Congresses.
Occupational training--Research--United States--Evaluation--Congresses.