Columbia subject headings:
Afroasiatic languages--Grammar, Comparative--Nilo-Hamitic.
Nilo-Hamitic languages--Grammar, Comparative--Afroasiatic.
Harvard subject headings:
Afroasiatic languages--Grammar, Comparative--Nilo-Hamitic.
Nilo-Hamitic languages--Grammar, Comparative--Afroasiatic.
Princeton subject headings:
Afroasiatic languages--Morphology.
Afroasiatic languages--Phonetics.
Nilo-Hamitic languages--Morphology.
Nilo-Hamitic languages--Phonetics.