Columbia subject headings:
Church and social problems--Switzerland--Zurich (Canton)--History--19th century.
Church work with the working class--Switzerland--Zurich (Canton)--History--19th century.
Protestant churches--Switzerland--Zurich (Canton)--History--19th century.
Socialism--Switzerland--Zurich (Canton)--History--19th century.
Zurich (Switzerland : Canton)--Church history--19th century.
Harvard subject headings:
Church and social problems--Switzerland--Zurich (Canton)--History--19th century.
Church work with the working class--Switzerland--Zurich (Canton)--History--19th century.
Protestant churches--Switzerland--Zurich (Canton)--History--19th century.
Socialism--Switzerland--Zurich (Canton)--History--19th century.
Zurich (Switzerland : Canton)--Church history--19th century.
Princeton subject headings: