Columbia subject headings:
Barth, Karl, 1886-1968.
God--History of doctrines--20th century.
Hartshorne, Charles, 1897-2000.
Harvard subject headings:
Barth, Karl, 1886-1968
God--History of doctrines--20th century
God--History of doctrines--20th century.
Hartshorne, Charles, 1897-2000
Princeton subject headings: