Columbia subject headings:
Catholic Church--Doctrines.
Catholic Church--Foreign relations.
Catholic Church--History.
Papacy--History.
Harvard subject headings:
Catholic Church--History--Dictionaries.
Papacy--Dictionaries.
Popes--Biography--Dictionaries.
Princeton subject headings:
Catholic Church--History--Dictionaries--French.
Papacy--History--Dictionaries--French.
Popes--Biography--Dictionaries--French.