Columbia subject headings:
Architecture--Conservation and restoration--Spain--History--20th century--Congresses.
Spain--History--1939-1975--Congresses.
Harvard subject headings:
Architecture and state--Spain--History--20th century--Congresses.
Architecture--Conservation and restoration--Spain--History--20th century--Congresses.
Spain--History--1939-1975--Congresses.
Spain--History--Civil War, 1936-1939--Destruction and pillage--Congresses.
Princeton subject headings:
Architecture and state--Spain--History--20th century--Congresses.
Architecture--Conservation and restoration--Spain--History--20th century--Congresses.
Spain--History--Civil War, 1936-1939--Destruction and pillage--Congresses.