Columbia subject headings:
Architecture--Spain--History--21st century--Designs and plans.
Homeless persons--Housing--Spain.
Public housing--Competitions--Spain.
Shelters for the homeless--Spain--Designs and plans.
Harvard subject headings:
Architecture--Spain--History--21st century--Designs and plans.
Homeless persons--Housing--Spain.
Public housing--Competitions--Spain.
Shelters for the homeless--Spain--Designs and plans.
Princeton subject headings:
Architecture--Spain--History--21st century--Designs and plans.
Homeless persons--Housing--Spain.
Public housing--Competitions--Spain.
Shelters for the homeless--Spain--Designs and plans.