Columbia subject headings:
Harvard subject headings:
Coptic manuscripts (Papyri)--Egypt--Congresses.
Coptic manuscripts (Papyri)--Facsimiles--Congresses.
Coptic manuscripts (Papyri)--Germany--Heidelberg--Congresses.
Princeton subject headings:
Coptic manuscripts (Papyri)--Egypt.
Coptic manuscripts (Papyri)--Germany--Heidelberg.