Columbia subject headings:
Theology--History--19th century.
Theology--History--20th century.
Theology.
Harvard subject headings:
Christianity and culture--History of doctrines--19th century.
Christianity and culture--History of doctrines--20th century.
Schleiermacher, Friedrich, 1768-1834
Theology, Doctrinal--History--19th century.
Theology, Doctrinal--History--20th century.
Tillich, Paul, 1886-1965
Princeton subject headings: