Columbia subject headings:
Architecture, Modern--20th century.
Architecture--England--London.
Harvard subject headings:
Architecture, Modern--20th century--England--London--Guidebooks.
Architecture--England--London--Guidebooks.
London (England)--Buildings, structures, etc.--Guidebooks.
Princeton subject headings:
Architecture, Modern--20th century--England--London--Guidebooks.
Architecture--England--London--Guidebooks.
London (England)--Buildings, structures, etc.--Guidebooks.