Columbia subject headings:
Arch of Constantine (Rome, Italy)
Harvard subject headings:
Arch of Constantine (Rome, Italy)
Rome (Italy)--Buildings, structures, etc.
Sculpture, Roman--Italy--Rome.
Triumphal arches--Italy--Rome.
Princeton subject headings:
Arch of Constantine (Rome, Italy)
Rome (Italy)--Buildings, structures, etc.
Sculpture, Roman--Italy--Rome.
Triumphal arches--Rome.