Columbia subject headings:
Positivism--History--19th century.
Protestant churches--Great Britain--Doctrines--History--19th century.
Protestant churches--United States--Doctrines--History--19th century.
Harvard subject headings:
Positivism--History--19th century.
Protestant churches--Great Britain--Doctrines--History--19th century.
Protestant churches--United States--Doctrines--History--19th century.
Princeton subject headings:
Positivism--History--19th century.
Protestant churches--Great Britain--Doctrines--History--19th century.
Protestant churches--United States--Doctrines--History--19th century.