Columbia subject headings:
Bulls, Papal.
Convento de San Ildefonso (Toro (Zamora, Spain))--History--Sources.
Monasteries--Spain--Toro (Zamora)--History--Sources.
Papal documents.
Zamora (Spain : Province)--Church history--Sources.
Harvard subject headings:
Catholic Church--Foreign relations.
Convento de San Ildefonso (Toro, Spain)--History--1227-1589--Sources.
Convents--Spain--History--Sources.
Zamora (Spain : Province)--Church history--1227-1589--Sources.
Princeton subject headings: