Columbia subject headings:
Church history--Primitive and early church, ca. 30-600.
Rome--History--Empire, 30 B.C.-476 A.D.
Harvard subject headings:
Church history--Primitive and early church, ca. 30-600
Church history--Primitive and early church, ca. 30-600.
Rome--History--Empire, 30 B.C.-476 A.D.
Princeton subject headings: