Columbia subject headings:
Christianity and politics--Europe--History--Congresses.
Church and state--Europe--16th century--History--Congresses.
Church and state--Europe--17th century--History--Congresses.
Religion and politics--Europe--History--Congresses.
Harvard subject headings:
Christianity and politics--Europe--History--Congresses.
Church and state--Europe--History--Congresses.
Religion and politics--Europe--History--Congresses.
Princeton subject headings: