Columbia subject headings:
Spanish language--Congresses.
Spanish language--Dialects--Canary Islands--Congresses.
Spanish language--Dialects--Latin America--Congresses.
Harvard subject headings:
Spanish language--Congresses.
Spanish language--Dialects--Canary Islands--Congresses.
Spanish language--Dialects--Latin America--Congresses.
Princeton subject headings:
Spanish language--Congresses.
Spanish language--Dialects--Canary Islands--Congresses.
Spanish language--Dialects--Latin America--Congresses.