Columbia subject headings:
Harvard subject headings:
Asceticism--Early works to 1800
Mysticism--Early works to 1800
Nestorian Church--Doctrines.
Orthodox Eastern Church--Doctrines.
Princeton subject headings:
Asceticism--Early works to 1800.
Mysticism--Early works to 1800.
Nestorian Church--Doctrines.
Orthodox Eastern Church--Doctrines.