- Italy--Milan1
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- Iʻrāb ʻan qawāʻid al-iʻrāb (Ibn Hishām, ʻAbd Allāh ibn Yūsuf)1
- Iṣfahānī, Maḥmūd ibn ʻAbd al-Raḥmān, 1275 or 1276-1348 or 1349. Tashyīd al-Qawāʻid1
- Jaghmīnī, Maḥmūd ibn Muḥammad, -1221?1
- Japan1
- Jean, de Verdun1
- Jewish ethics in literature1
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- Jiří, z Poděbrad, King of Bohemia, 1420-14711
- John, Duke of Burgundy, 1371-14191