Columbia subject headings:
Afroasiatic languages--Grammar, Comparative.
Altaic languages--Grammar, Comparative.
Indo-European languages--Grammar, Comparative.
Uralic languages--Grammar, Comparative.
Harvard subject headings:
Afroasiatic languages.
Indo-European languages.
Ural-Altaic languages.
Princeton subject headings:
Afroasiatic languages--Grammar, Comparative.
Altaic languages--Grammar, Comparative.
Indo-European languages--Grammar, Comparative.
Uralic languages--Grammar, Comparative.