Columbia subject headings:
Architecture, Domestic--Italy--Rome--Catalogs.
Architecture, Domestic--Netherlands--Catalogs.
Architecture, Domestic--Spain--Madrid--Catalogs.
Harvard subject headings:
Apartment houses--Europe--Designs and plans.
Architecture, Domestic--Italy--Rome--Catalogs.
Architecture, Domestic--Netherlands--Catalogs.
Architecture, Domestic--Spain--Madrid--Catalogs.
Princeton subject headings:
Apartment houses--Europe.
Architecture, Domestic--Europe.
Housing--Europe.