Columbia subject headings:
Evaluation research (Social action programs)
Evaluation research (Social action programs)--United States.
Social surveys.
Harvard subject headings:
Evaluation research (Social action programs)--United States.
Evaluation--Methodology.
Social surveys.
Princeton subject headings:
Evaluation research (Social action programs)
Evaluation research (Social action programs)--United States--Collected works.
Social surveys--Collected works.