Columbia subject headings:
Apartment houses--Europe--Designs and plans--Exhibitions.
Architecture--Europe--History--20th century--Designs and plans--Exhibitions.
Harvard subject headings:
Apartment houses--Europe--Designs and plans--Exhibitions.
Apartment houses--Exhibitions--Europe--Designs and plans.
Architecture, Modern--20th century--Europe--Designs and plans--Exhibitions.
Architecture--Europe--History--20th century--Designs and plans--Exhibitions.
Princeton subject headings:
Apartment houses--Europe--Designs and plans--Exhibitions.
Architecture, Modern--20th century--Europe--Designs and plans--Exhibitions.