Columbia subject headings:
Harvard subject headings:
Acton, John Emerich Edward Dalberg Acton, Baron, 1834-1902--Contributions in political science.
Catholic Church--Great Britain--History--19th century.
Liberalism (Religion)--Great Britain--Catholic Church--History--19th century.
Liberalism (Religion)--Great Britain--History--19th century.
Political science--Great Britain--History--19th century
Princeton subject headings:
Acton, John Emerich Edward Dalberg Acton, Baron, 1834-1902.
Catholic Church--Great Britain--History--19th century.
Liberalism (Religion)--Great Britain--History--19th century.
Political science--Great Britain--History--19th century.