Columbia subject headings:
Egypt--Economic conditions--332 B.C.-640 A.D.
Egypt--History--30 B.C.-640 A.D.
Harvard subject headings:
Egypt--Economic conditions--332 B.C.-640 A.D.
Egypt--History--30 B.C.-640 A.D.
Oxyrhynchus papyri.
Theon family.
Princeton subject headings:
Egypt--Economic conditions--332 B.C.-640 A.D.
Egypt--History--30 B.C.-640 A.D.