Columbia subject headings:
Love--Religious aspects--Christianity--Early works to 1800.
Mysticism--Early works to 1800.
Spiritual life--Catholic Church--Early works to 1800.
Harvard subject headings:
Love--Religious aspects--Catholic Church--Early works to 1800.
Love--Religious aspects--Christianity--Early works to 1800
Mysticism--Early works to 1800
Spiritual life--Catholic Church--Early works to 1800
Princeton subject headings: