Columbia subject headings:
Church history--Primitive and early church, ca. 30-600.
Theology--Early works to 1800.
Theology--History--Early church, ca. 30-600.
Harvard subject headings:
Bible. New Testament--Criticism, interpretation, etc.
Theology--Early works to 1800
Theology--History--Early church, ca. 30-600
Theology--History--Early church, ca. 30-600.
Princeton subject headings: