Columbia subject headings:
Harvard subject headings:
Catholic Church--America--History--Congresses.
Catholic Church--Spain--History--Congresses.
Evangelistic work--Congresses.
Lord's Supper--Catholic Church--Congresses
Lord's Supper--Congresses.
Princeton subject headings:
Eucharistic congresses.
Evangelistic work--Congresses.
Latin America--Religious life and customs--Congresses.
Lord's Supper--Catholic Church--History--Congresses.
Seville (Spain)--Religious life and customs--Congresses.
Spain--Religious life and customs--Congresses.