Columbia subject headings:
Catholic Church--Europe--History.
Europe--Politics and government--1789-1900.
Europe--Politics and government--18th century.
Papacy--History--1566-1799.
Papacy--History--19th century.
Harvard subject headings:
Catholic Church--Europe--History.
Europe--Politics and government--1789-1900.
Europe--Politics and government--18th century.
Papacy--History--1566-1799
Papacy--History--19th century.
Princeton subject headings:
Catholic Church--Europe--History.
Europe--Politics and government--1789-1900.
Europe--Politics and government--18th century.
Papacy--History--1566-1799.
Papacy--History--19th century.