Columbia subject headings:
Codex Theodosianus.
Council of Chalcedon (451 : Chalcedon)
Ecclesiastical law.
Harvard subject headings:
Canon law--Early church, ca. 30-600.
Church and state--History of doctrines--Early church, ca. 30-600.
Codex Theodosianus.
Council of Chalcedon (451)
Ecclesiastical law--History--To 1500.
Princeton subject headings:
Codex Theodosianus.
Council of Chalcedon (451)
Ecclesiastical law.