Columbia subject headings:
Christianity and politics--History--Congresses.
Great Britain--Church history--Congresses.
Nationalism--Religious aspects--Christianity--History--Congresses.
Poland--Church history--Congresses.
Harvard subject headings:
Christianity and politics--History--Congresses.
Great Britain--Church history--Congresses.
Nationalism--Religious aspects--Christianity--History of doctrines--Congresses.
Nationalism--Religious aspects--Christianity--History--Congresses.
Poland--Church history--Congresses.
Princeton subject headings:
Christianity and politics--History--Congresses.
Great Britain--Church history--Congresses.
Nationalism--Religious aspects--Christianity--History--Congresses.
Poland--Church history--Congresses.