Gray, William G. Magical ritual methods, by William G. Gray. - Cheltenham (Glos.), Helios Book Service, 1969. - 301 p. 17 illus. 23 cm. ISBN: 0900448016 Subjects--Topical Terms: Magic.Ritual. LC Class. No.: BF1623.R6 / G7 Dewey Class. No.: 133.4