Columbia subject headings:
Europe--History--1517-1648--Congresses.
Reformation--Congresses.
Reformation--Social aspects--Europe--Congresses.
Harvard subject headings:
Europe--History--1517-1648--Congresses.
Reformation--Congresses
Reformation--Social aspects--Europe--Congresses.
Princeton subject headings:
Europe--History--1517-1648--Congresses.
Reformation--Congresses.
Reformation--Social aspects--Europe--Congresses.