Columbia subject headings:
Architecture--England--London--History--20th century--Guidebooks.
Harvard subject headings:
Architecture--England--London--20th century--Guidebooks.
Architecture--England--London--21st century--Guidebooks.
London (England)--Buildings, structures, etc.--Guidebooks.
Princeton subject headings:
Architecture--England--London--History--21st century--Guidebooks.
Guidebooks.
London (England)--Buildings, structures, etc.--Guidebooks.