Columbia subject headings:
Absolution (Canon law)--History--Sources.
Catholic Church. Poenitentiaria Apostolica--History.
Dispensations (Canon law)--History--Sources.
Papacy--History--Sources.
Pius II, Pope, 1405-1464.
Harvard subject headings:
Papal States--History.
Penitentials.
Pius II, Pope, 1405-1464.
Princeton subject headings:
Absolution (Canon law)--History--Sources.
Catholic Church. Poenitentiaria Apostolica--History.
Catholic Church. Pope (1458-1464 : Pius II)
Dispensations (Canon law)--History--Sources.
Papacy--History--Sources.