Columbia subject headings:
College attendance--United States--Statistics.
Education, Higher--United States--Statistics.
Universities and colleges--United States--Statistics.
Harvard subject headings:
College attendance--United States--Statistics.
Education, Higher--United States--Statistics
Universities and colleges--United States--Statistics.
Princeton subject headings:
College attendance--United States--Statistics.
College students--United States--Statistics.
Education, Higher--United States--Statistics.
Statistics.
Universities and colleges--United States--Statistics.