Columbia subject headings:
Crusades--13th-15th centuries.
Innocent III, Pope, 1160 or 1161-1216.
Lateran Council (4th : 1215 : Palazzo Lateranense)
Harvard subject headings:
Princeton subject headings:
Crusades--13th-15th centuries.
Innocent III, Pope, 1160 or 1161-1216.
Lateran Council (4th : 1215 : Palazzo Lateranense)