Columbia subject headings:
Bilbao (Spain)--Church history.
Catholic Church. Diocese of Bilbao (Spain)
Vatican Council (2nd : 1962-1965 : Basilica di San Pietro in Vaticano)
Harvard subject headings:
Bilbao (Spain)--Church history--20th century.
Catholic Church--Doctrines--History--20th century.
Catholic Church--History--1965-
Catholic Church--Spain--Bilbao--History--20th century.
Vatican Council (2nd : 1962-1965 : Basilica di San Pietro in Vaticano)
Princeton subject headings: