Columbia subject headings:
Egypt--Languages--History.
Linguistic change--Egypt--History.
Linguistic change--Nubia--History.
Linguistic change--Sudan--History.
Mahas-Fiyadikka language--Egypt.
Mahas-Fiyadikka language--Nubia.
Mahas-Fiyadikka language--Sudan.
Nubia--Languages--History.
Sudan--Languages--History.
Harvard subject headings:
Egypt--Languages--History.
Linguistic change--Egypt--History.
Linguistic change--Egypt.
Linguistic change--Nubia--History.
Linguistic change--Nubia.
Linguistic change--Sudan--History.
Linguistic change--Sudan.
Mahas-Fiyadikka language--Egypt.
Mahas-Fiyadikka language--Nubia.
Mahas-Fiyadikka language--Sudan.
Nubia--Languages--History.
Nubian languages--Grammar, Comparative--Egyptian.
Nubian languages--History.
Sudan--Languages--History.
Princeton subject headings: