Columbia subject headings:
Church history--Primitive and early church.
Ecclesiastical law--Church and state.
Ecclesiastical law--History.
Ecclesiastical law--Rome.
Harvard subject headings:
Academic theses.
Church and state--Byzantine Empire--History.
Church and state--Europe--History
Church and state--Rome--History
Church history--Primitive and early church, ca. 30-600
Codex Theodosianus.
Ecclesiastical law--Byzantine Empire--History.
Ecclesiastical law--Rome--History.
Princeton subject headings: