Columbia subject headings:
Arch of Constantine (Rome, Italy)
Constantine I, Emperor of Rome, -337--Monuments--Italy--Rome.
Hadrian, Emperor of Rome, 76-138--Monuments--Italy--Rome.
Rome (Italy)--Antiquities, Roman.
Rome (Italy)--Buildings, structures, etc.
Sculpture, Roman--Italy--Rome.
Harvard subject headings:
Arch of Constantine (Rome, Italy)
Rome (Italy)--Buildings, structures, etc.
Sculpture, Roman--Italy--Rome.
Triumphal arches--Italy--Rome.
Triumphal arches--Rome.
Princeton subject headings:
Arch of Constantine (Rome, Italy)
Rome (Italy)--Buildings, structures, etc.
Sculpture, Roman--Italy--Rome.
Triumphal arches--Rome.