Columbia subject headings:
City churches--England--Durham.
City churches--England--Sunderland (Tyne and Wear)
City clergy.
Secularism.
Theology--History--20th century.
Harvard subject headings:
Chaplains, Industrial--England.
Church of England--Missions.
Church work with the working class--England.
City missions--England.
Mission of the church.
Missions--Industrial work
Secularization (Theology).
Tillich, Paul, 1886-1965
Princeton subject headings: