Columbia subject headings:
Harvard subject headings:
Catholic Church--Missions--America--Congresses.
Catholic Church--Spain--Asturias--Congresses.
Evangelistic work--America--Congresses.
Missions, Spanish--America--Congresses.
Princeton subject headings:
Catholic Church--Missions--America--Congresses.
Catholic Church--Spain--Asturias--Congresses.
Evangelistic work--America--Congresses.
Missions, Spanish--America--Congresses.