Columbia subject headings:
Harvard subject headings:
Catholic Church--Foreign relations--Italy.
Catholic Church--Italy--History--19th century.
Catholic Church--Political activity--Italy--History--19th century.
Church and state--Catholic Church--History--19th century.
Church and state--Italy--History--19th century
Italy--Church history--19th century.
Italy--Politics and government--1870-1914.
Roman question--Sources.
Roman question.
Princeton subject headings:
Catholic Church--Foreign relations--Italy--History--19th century.
Catholic Church--Italy--Political activity--History--19th century.
Church and state--Catholic Church--History--19th century.
Church and state--Italy--History--19th century.
Church and the world--History--19th century.
Italy--Church history--19th century.
Italy--Politics and government--1870-1914.
Roman question--Sources.
Roman question.