Columbia subject headings:
Harvard subject headings:
Coptic monasteries--Egypt--Natrun Valley.
Coptic monasteries--Egypt--Wādī al-Naṭrūn.
Natrun Valley (Egypt)--Church history.
Spiritual life--Coptic Church
Princeton subject headings:
Coptic monasteries--Egypt--Natrūn Valley.
Coptic monasticism and religious orders.