Columbia subject headings:
Employees--Training of--United States--Evaluation.
Employees--Training of--United States.
Occupational retraining--United States--Evaluation.
Occupational retraining--United States.
Harvard subject headings:
Employees--Training of--United States--Evaluation.
Employees--Training of--United States.
Occupational retraining--United States--Evaluation.
Occupational retraining--United States.
Princeton subject headings:
Employees--Training of--United States--Evaluation.
Occupational retraining--United States--Evaluation.