Columbia subject headings:
Action research--United States.
Evaluation research (Social action programs)--United States.
Social service--Research--United States.
Harvard subject headings:
Action research--United States.
Conference papers and proceedings.
Evaluation research (Social action programs)--United States.
Social service--Research--United States.
Princeton subject headings:
Action research--United States.
Evaluation research (Social action programs)--United States.
Social service--Research--United States.