Columbia subject headings:
Akhfash al-Awsaṭ, Saʻīd ibn Masʻadah, -approximately 830.
Arabic language--Grammar.
Sībawayh, ʻAmr ibn ʻUthmān, active 8th century.
Harvard subject headings:
Princeton subject headings:
Akhfash al-Awsaṭ, Saʻīd ibn Masʻadah, -approximately 830.
Sībawayh, ʻAmr ibn ʻUthmān, active 8th century.