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Ibn Khaldun was found 2 times on 1 page:

1. code/past.txt 15 Jul 2012, 479.40 KB
   under Mongol leader Kublai Khan|poli 0319 1406: Ibn Khaldun, Arab scientist, dies in Cairo at age... eclipse on this day 0527 1332: Ibn Khaldun, Arab scientist, is born in