Columbia subject headings:
Architecture--Spain--Bilbao--History--20th century.
Ispizua, Pedro, 1895-1976--Criticism and interpretation.
Harvard subject headings:
Architects--Spain--Bilbao.
Architecture--Spain--Bilbao--20th century.
Bilbao (Spain)--Buildings, structures, etc.
Ispizua, Pedro, 1895-1976--Criticism and interpretation.
Princeton subject headings: