Columbia subject headings:
Conservatism--United States.
Liberalism--United States.
Political science--United States.
United States--Politics and government--1945-1989.
Harvard subject headings:
Conservatism--United States
Liberalism--United States.
Political science--United States
United States--Politics and government--1945-1989.
Princeton subject headings:
Conservatism--United States.
Liberalism--United States.
Political science--United States.
United States--Politics and government--1945-1989.