Columbia subject headings:
Harvard subject headings:
Doctor of philosophy degree--United States--Evaluation.
Geography--Study and teaching (Higher)--United States--Evaluation.
Psychology--Study and teaching (Higher)--United States--Evaluation.
Reference works.
Research--United States--Evaluation.
Social sciences--Study and teaching (Graduate)--United States--Directories.
Social sciences--Study and teaching (Graduate)--United States.
Social sciences--Study and teaching (Higher)--United States--Evaluation.
Princeton subject headings:
Doctor of philosophy degree--United States--Evaluation.
Social sciences--Research--United States--Evaluation.
Social sciences--Study and teaching (Higher)--United States--Evaluation.