Columbia subject headings:
Boff, Leonardo.
Doctrine of two kingdoms.
Liberation theology.
Luther, Martin, 1483-1546.
Two kingdoms (Lutheran theology)
Harvard subject headings:
Boff, Leonardo.
Duchrow, Ulrich.
Liberation theology--History.
Luther, Martin, 1483-1546
Two kingdoms (Lutheran theology)--History of doctrines.
Princeton subject headings: