Columbia subject headings:
Copts.
Egypt--Civilization--332 B.C.-638 A.D.
Harvard subject headings:
Copts.
Egypt--Civilization--332 B.C.-638 A.D.
Egypt--Civilization--332 B.C.-638 B.C.
Princeton subject headings:
Copts.
Egypt--Civilization--332 B.C.-638 B.C.