Williamson, Marianne A return to love : reflections on the principles of a course in miracles / Williamson, Marianne - New York : Harper Perennial, 1992. - 308 pages ; 20 cm. ISBN: 0060163747 Pbk. Bp. Subjects--Topical Terms: Course in miracles.New Age movement.Spiritual life. LC Class. No.: BP 605.N48 W55 1992 ASA