Rūfāʼīl, Ashraf Walim Al-Tawḥīd wa-l-tathlīth - [El Cairo] : Maktabat al-Mahabah , [s.d.] - 159 p. il. ; 21 cm Subjects--Topical Terms: TrinidadReligiones orientales Universal Decimal Class. No.: 231.01:29