Columbia subject headings:
Catholic Church--Missions.
Vatican Council (2nd : 1962-1965 : Basilica di San Pietro in Vaticano). Decretum de activitate missionali ecclesiae.
Harvard subject headings:
Catholic Church--Missions.
Vatican Council (2nd : 1962-1965 : Basilica di San Pietro in Vaticano). Decretum de activitate missionali Ecclesiae.
Princeton subject headings: