Columbia subject headings:
German literature--History and criticism--Congresses.
Germany--History--1517-1648--Congresses.
Luther, Martin, 1483-1546--Congresses.
Reformation--Congresses.
Harvard subject headings:
German literature--History and criticism--Congresses
Germany--History--1517-1648--Congresses.
Luther, Martin, 1483-1546--Congresses.
Reformation--Congresses
Princeton subject headings: