Columbia subject headings:
Church history--Primitive and early church, ca. 30-600.
Harvard subject headings:
Catholic Church--Controversial literature--History and criticism.
Catholic Church--Doctrines--History--To 1500.
Church history--Primitive and early church, ca. 30-600
Theologians (Canon law)
Theologians--Biography
Princeton subject headings:
Church history--Primitive and early church, ca. 30-600.