Columbia subject headings:
Harvard subject headings:
Catholic Church--Foreign relations--Portugal--Congresses.
Catholic Church--Foreign relations--Portugal.
Catholic Church--Foreign relations--Spain--Congresses.
Catholic Church--Foreign relations--Spain.
Catholic Church--Iberian Peninsula--History--To 1500--Congresses.
Catholic Church--Iberian Peninsula--History--To 1500.
Iberian Peninsula--Church history--Congresses.
Iberian Peninsula--Church history.
Papacy--History--To 1309
Papacy--History--To 1309--Congresses.
Portugal--Church history--Congresses.
Portugal--Church history.
Portugal--Foreign relations--Catholic Church--Congresses.
Portugal--Foreign relations--Catholic Church.
Spain--Church history--Congresses.
Spain--Church history.
Spain--Foreign relations--Catholic Church--Congresses.
Spain--Foreign relations--Catholic Church.
Princeton subject headings:
Catholic Church--Foreign relations--Portugal--Congresses.
Catholic Church--Foreign relations--Spain--Congresses.
Catholic Church--Iberian Peninsula--History--To 1500--Congresses.
Iberian Peninsula--Church history--Congresses.
Papacy--History--To 1309--Congresses.
Portugal--Church history--Congresses.
Portugal--Foreign relations--Catholic Church--Congresses.
Spain--Church history--Congresses.
Spain--Foreign relations--Catholic Church--Congresses.