North, Gary, Unholy spirits : occultism and new age humanism / Gary North. - Ft. Worth, Texas : Dominion Press, (c)1988. - vii, 426 pages ; 24 cm. Originally published in 1986. Subjects--Topical Terms: Occultism.Psychical research. LC Class. No.: BF1411 / .U546 1988 BF1411