AL-Daffa, Ali A. (Personal Name)

His Studies on the exact sciences in Medieval Islam, c1984: CIP t.p. (Ali A. al-Daffa)

Shawqii, J.S.A. al-ªUlium al-riyia=diiyah fii al-=ha=diarah al-Isliamiiyah, c1985-: v. 1, t.p. (D. ªAlii al-Daffiaª, ustiadh al-riyia=diiyiat wa-ªamiid Kull. al-ªUlium, Jiam. al-Batriul wa-al-Maªiadin al-=Zahrian, al-Mamlakah al-ªArabiiyah al-Saªiudiiyah)

His Riuwiad ªilm al-jughriafiiyah fii al-=ha=diarah al-ªArabiiyah al-Isliamiiyah, 1989: t.p. (al-Ustiadh al-Duktiur ªAlii ibn ªAbd Alliah al-Daffiaª) p. 255 (b. 1362 H/1943 or 4 in ªUnayzah, Saudi Arabia)