Columbia subject headings:
Economics--History.
Oertel, Friedrich, 1884-1975.
Papyrology.
Harvard subject headings:
Economic history--To 500
Manuscripts (Papyri)
Oertel, Friedrich, 1884-1975--Bibliography.
Princeton subject headings:
Economic history--To 500.
Manuscripts (Papyri)
Oertel, Friedrich, 1884-1975--Bibliography.