Title: Dirāsāh lughawīyah fī arājīz Ruʾbah wa-al-ʻAjjāj
Subjects: Language, Glossaries, Arabic poetry, Dictionaries
People: ʻAjjāj, ʻAbd Allāh ibn Ruʾbah (ca. 646-ca. 715), Ruʾbah ibn al-ʻAjjāj (d. 762?)
Time periods: 622-750