Columbia subject headings:
Harvard subject headings:
Arabic language--Grammar.
Arabic philology--History.
Language and languages--Style
Language and languages--Variation
Semitic languages--Grammar, Comparative.
Semitic philology--History.
Princeton subject headings:
Arabic language--Grammar.
Arabic philology--History.
Language and languages--Style.
Language and languages--Variation.
Semitic languages--Grammar, Comparative.
Semitic philology--History.