Columbia subject headings:
Architecture--Spain--Barcelona--Exhibitions.
Bohigas, Oriol--Exhibitions.
Harvard subject headings:
Architects--Spain--Catalonia--Exhibitions.
Architectural drawing--Spain--Catalonia--Exhibitions.
Architecture, Modern--20th century--Spain--Catalonia--Exhibitions.
Architecture--Spain--Barcelona--Exhibitions.
Bohigas, Oriol--Exhibitions.
Princeton subject headings: