Columbia subject headings:
Catholic Church--Spain--History--20th century.
Church and state--Spain--History--20th century.
Persecution--Spain--History--20th century.
Spain--Church history--20th century.
Harvard subject headings:
Catholic Church--Spain--History--20th century.
Church and state--Spain--Catholic Church.
Persecution--Spain.
Spain--History--Civil War, 1936-1939.
Princeton subject headings: