Columbia subject headings:
Political science--Periodicals.
Presidents--United States--Periodicals.
United States--Politics and government--Periodicals.
Harvard subject headings:
Political science--Periodicals
Presidents--United States--Periodicals.
United States--Politics and government--Periodicals.
Princeton subject headings:
Periodicals.
Political science--Periodicals.
Presidents--United States--Periodicals.
United States--Politics and government--Periodicals.