Columbia subject headings:
Dissenters, Religious--Wales--History--20th century.
Religion and sociology--Wales.
Religious thought--Wales--20th century.
Social gospel.
Wales--History--20th century.
Harvard subject headings:
Church and social problems--Wales--History--20th century.
Dissenters, Religious--Wales--History--20th century.
Liberalism (Religion)--Wales--History--20th century.
Religion and sociology--Wales.
Religious thought--20th century--Wales.
Social gospel.
Theology--Wales--History--20th century.
Wales--Church history--20th century.
Wales--History--20th century.
Princeton subject headings:
Dissenters, Religious--Wales--20th century.
Social gospel.
Wales--Church history.