Das Kitāb Ṣūrat al-Arḍ des Abū Ǧaʿfar Muḥammad ibn Mūsā al-Ḫuwārizmī - Khuwārizmī, Muḥammad ibn Mūsá active 813-846 (Maṭbaʿat al-Rābiṭah, 1962)