Columbia subject headings:
Harvard subject headings:
Conservatism--Europe, Western--History--20th century.
Conservatism--United States--History--20th century
Political participation--Europe, Western--History--20th century.
Political participation--United States--History--20th century.
Princeton subject headings:
Conservatism--Europe, Western--History--20th century.
Conservatism--United States--History--20th century.
Political participation--Europe, Western--History--20th century.
Political participation--United states--history--20th century.