Columbia subject headings:
Alliances--History.
Ecclesiastical law--Europe--History.
Political science.
Reformation--Europe.
Reformation--Switzerland--Constance.
Zwingli, Ulrich, 1484-1531.
Harvard subject headings:
Alliances--History.
Ecclesiastical law--Europe--History.
Reformation--Europe
Zwingli, Ulrich, 1484-1531
Princeton subject headings:
Reformation--Switzerland--Constance.
Zwingli, Ulrich, 1484-1531--Political science.