1. Hādhihi risālah fī al-ḥisāb ... Creator: Ibn al-Hāʼim, Aḥmad ibn Muḥammad, -1412Ibn al-Bannāʼ, Aḥmad ibn Muḥammad, 1256?-1321?Dimashqī, ʻAbd al-Laṭīf ibn AḥmadAshʻarī, Aḥmad ibn Muḥammad, active 11th century-12th century Date: 1719-1720 Language: Arabic Geographic region: Turkey Extent: 19-23 long lines with generous margins for notes; extensive marginalia in first work. Catchwords in third work each verso, lower left.