Columbia subject headings:
Forgery of manuscripts--Europe--History--To 1500.
Manuscripts, Medieval--History.
Papacy--History--To 1309.
Popes--Primacy--History of doctrines--Middle Ages, 600-1500.
Pseudo-Isidorian decretals.
Harvard subject headings:
Forgery of manuscripts--History.
Manuscripts, Medieval--Germany.
Papacy
Pseudo-Isidorian decretals.
Princeton subject headings: