Columbia subject headings:
City planning--Spain--Barcelona.
Urban beautification--Spain--Barcelona.
Urban landscape architecture--Spain--Barcelona.
Harvard subject headings:
Architecture--Spain--Barcelona.
City planning--Spain--Barcelona
Urban beautification--Spain--Barcelona.
Urban landscape architecture--Spain--Barcelona.
Princeton subject headings:
City planning--Spain--Barcelona.
Urban beautification--Spain--Barcelona.
Urban landscape architecture--Spain--Barcelona.