Columbia subject headings:
Civilization, Medieval.
One thousand, A.D.
Sylvester II, Pope, approximately 945-1003.
Tenth century.
Harvard subject headings:
Civilization, Medieval.
One thousand, A.D.
Sylvester II, Pope, approximately 945-1003.
Tenth century.
Princeton subject headings:
Civilization, Medieval.
One thousand, A.D.
Sylvester II, Pope, approximately 945-1003.
Tenth century.