Columbia subject headings:
Christian antiquities--Italy--Rome.
Hippolytus, Antipope, approximately 170-235 or 236--Cult--Italy--Rome.
Italy--Antiquities.
Rome (Italy)--Antiquities.
Harvard subject headings:
Catacomba di Hippolytus (Rome, Italy)
Catacombs--Italy--Rome
Christian antiquities--Italy--Rome.
Hippolytus, Antipope, approximately 170-235 or 236--Cult--Italy--Rome.
Italy--Antiquities.
Rome (Italy)--Antiquities.
Princeton subject headings:
Catacombs--Italy--Rome.
Christian antiquities--Italy--Rome.
Hippolytus, Antipope, approximately 170-235 or 236.