Columbia subject headings:
Architects--Europe.
Architecture, Modern--20th century.
Architecture, Modern--21st century.
Architecture--Europe--History--20th century.
Architecture--Europe--History--21st century.
Harvard subject headings:
Architects--Europe.
Architecture--Europe--21st century.
Princeton subject headings:
Architects--Europe.
Architecture, Modern--20th century.
Architecture, Modern--21st century.
Architecture--Europe--21st century.
Architecture--Europe--History--20th century.