Columbia subject headings:
Harvard subject headings:
Religious minorities--Europe--History--Congresses.
Religious minorities--Europe--Social conditions--Congresses.
Religious minorities--Legal status, laws, etc.--Europe--History--Congresses.
Princeton subject headings:
Cultural pluralism--Europe--Congresses.
Europe--Emigration and immigration--Congresses.
Religious minorities--Europe--Congresses.
Religious pluralism--Europe--Congresses.