Columbia subject headings:
Canary Islands--Congresses.
Canary Islands--Relations--Cuba--Congresses.
Cuba--Relations--Canary Islands--Congresses.
Harvard subject headings:
Canary Islands--Congresses.
Canary Islands--Relations--Cuba--Congresses.
Cuba--Relations--Canary Islands--Congresses.
Princeton subject headings:
Canary Islands--Congresses.
Canary Islands--Relations--Cuba--Congresses.
Cuba--Relations--Canary Islands--Congresses.