Columbia subject headings:
Church history--Primitive and early church, ca. 30-600.
Rome (Italy)--Antiquities.
Rome--Antiquities.
Harvard subject headings:
Church history--Primitive and early church, ca. 30-600
Duchesne, L. (Louis), 1843-1922--Bibliography.
Rome (Italy)--Antiquities.
Rome--Antiquities.
Princeton subject headings:
Church history--Primitive and early church, ca. 30-600.
Rome (Italy)--Antiquities.
Rome--Antiquities.