Title: Tārīkh al-Mawālī wa-dawruhum fī al-ḥayāh al-ijtimāʻīyah wa-al-iqtiṣādīyah fī ṣadr al-Islām wa-al-dawlah al-Umawīyah
Subjects: Patron and client, Social conditions, Islamic civilization
Places: Islamic Empire