Columbia subject headings:
Botany--Italy--Rome.
Colosseum (Rome, Italy)
Inscriptions--Italy--Rome.
Harvard subject headings:
Botany--Italy--Rome.
Colosseum (Rome, Italy)
Inscriptions--Italy--Rome.
Princeton subject headings:
Botany--Italy--Rome.
Colosseum (Rome, Italy)
Inscriptions--Italy--Rome.