Columbia subject headings:
Catholic Church--Missions--Congresses.
Missions, Portuguese--Congresses.
Missions--Social aspects--Congresses.
Harvard subject headings:
Catholic Church--Missions--Congresses.
Missions, Portuguese--Congresses.
Missions--Social aspects--Congresses.
Princeton subject headings:
Catholic Church--History--Congresses.
Catholic Church--Missions--History--Congresses.
Christianity--Congresses.
Missions, Portuguese--History--Congresses.