Columbia subject headings:
Architecture--Periodicals.
Architecture--Spain--Periodicals.
Art--Periodicals.
Art--Spain--Periodicals.
Harvard subject headings:
Architecture--Periodicals
Architecture--Spain--Periodicals.
Art--Periodicals
Art--Spain--Periodicals.
Princeton subject headings:
Architecture, Modern--20th century--Periodicals.
Art, Modern--20th century--Periodicals.
Periodicals.