Columbia subject headings:
Catholic Church--History--16th century.
Ferdinand I, Holy Roman Emperor, 1503-1564.
Witzel, Georg, 1501-1573.
Harvard subject headings:
Catholic Church--Doctrines--History--16th century.
Catholic Church--Relations--Lutheran Church.
Christian union conversations--Germany--History--16th century.
Christian union--Catholic Church
Christian union--Lutheran Church
Church--History of doctrines--16th century
Lutheran Church--Doctrines--History--16th century
Lutheran Church--Relations--Catholic Church
Reformation--Germany
Witzel, Georg, 1501-1573
Witzel, Georg, 1501-1573--Contributions in doctrine of unity of the church.
Princeton subject headings: