Columbia subject headings:
Althaus, Paul, 1888-1966.
Barth, Karl, 1886-1968.
Calvin, Jean, 1509-1564.
Elert, Werner, 1885-1954.
Faith--History of doctrines--Sources.
Faith--History of doctrines.
Luther, Martin, 1483-1546.
Melanchthon, Philip, 1497-1560.
Tillich, Paul, 1886-1965.
Harvard subject headings:
Althaus, Paul, 1888-1966
Barth, Karl, 1886-1968
Calvin, Jean, 1509-1564
Elert, Werner, 1885-1954.
Faith--History of doctrines--Modern period, 1500-
Faith--History of doctrines--Modern period, 1500---Sources.
Luther, Martin, 1483-1546
Melanchthon, Philip, 1497-1560
Tillich, Paul, 1886-1965
Princeton subject headings: