Columbia subject headings:
Harvard subject headings:
Abbots--Byzantine Empire--Biography--Early works to 1800.
Christian saints--Biography--Early works to 1800
Symeon, the New Theologian, Saint, 949-1022.
Princeton subject headings:
Abbots--Byzantine Empire--Biography--Early works to 1800.
Spiritual life--Orthodox Eastern Church--Early works to 1800.
Symeon, the New Theologian, Saint, 949-1022.