Columbia subject headings:
Architecture--Italy--Rome--History--20th century--Guidebooks.
EUR (Rome, Italy)--Guidebooks.
Harvard subject headings:
Architecture--Italy--Rome--20th century--Guidebooks.
Architecture--Italy--Rome--History--Guidebooks.
EUR (Rome, Italy)--Guidebooks.
Rome (Italy)--Buildings, structures, etc.--Guidebooks.
Rome (Italy)--Guidebooks.
Princeton subject headings:
Architecture--Italy--Rome--History--20th century--Guidebooks.
EUR (Rome, Italy)--Guidebooks.
Guidebooks.
Rome (Italy)--Buildings, structures, etc.--Guidebooks.
Rome (Italy)--Guidebooks.