Columbia subject headings:
Basilica di S. Sebastiano (Rome, Italy)
Catacombs--Italy--Rome.
Church architecture--Italy--Rome.
Harvard subject headings:
Basilica di S. Sebastiano (Rome, Italy)
Catacombs--Italy--Rome
Christian antiquities--Italy--Rome.
Princeton subject headings:
Basilica di S. Sebastiano (Rome, Italy)
Catacombs--Italy--Rome.
Church architecture--Italy--Rome.