Columbia subject headings:
Canary Islands--International status.
Harvard subject headings:
Council of Basel (1431-1449 : Basel, Switzerland)
Portugal--Foreign relations--Spain.
Spain--Foreign relations--Portugal.
Spain--History--711-1516.
Princeton subject headings:
Canary Islands--History.
Cartagena, Alonso de, 1385?-1456. Allegationes super conquesta Insularum Canariae contra portugalenses.