Columbia subject headings:
Architecture--Spain--Madrid--History--21st century--Designs and plans.
Dwellings--Spain--Madrid--Designs and plans.
Public housing--Spain--Madrid.
Harvard subject headings:
Architecture, Domestic--Designs and plans
Architecture, Modern--21st century--Designs and plans.
Architecture, Modern--Designs and plans--21st century.
Cluster housing--Designs and plans.
Princeton subject headings:
Apartment houses--Designs and plans.
Architecture, Domestic--Designs and plans.
Architecture, Modern--20th century--Designs and plans.
Architecture, Modern--21st century--Designs and plans.
Public housing.