Dublin, Chester Beatty Library
Ar 3035, Ishaq Ibn Hunayn's Arabic, Translation of Euclid's Elementa,
AD 1270 (AH 699), Probably Baghdad, Iraq.
Ar 3424, Revision of Euclid's Elements of Geometry, by Athir al-Din al-Mufaddal ibn `Umar al-Abhari,
copied by `Ali ibn `Umar ibn `Ali al-Qazwini, Iran or Iraq, 1250-1275α © Σ