Columbia subject headings:
Catacombs--Italy--Rome.
Mural painting and decoration, Early Christian--Italy--Rome.
Mural painting and decoration, Roman--Italy--Rome.
Santi Marcellino e Pietro Catacomb (Rome, Italy)
Harvard subject headings:
Catacombs--Italy--Rome
Christian art and symbolism
Mural painting and decoration, Early Christian--Italy--Rome.
Princeton subject headings:
Catacombs--Italy--Rome.
Mural painting and decoration, Early Christian--Italy--Rome.
Mural painting and decoration, Roman--Italy--Rome.
Santi Marcellino e Pietro Catacomb (Rome, Italy)