Book Review: A Study Of Early Christianity . By Joseph B. Tyson. Macmillan,1973. xv+447 pp. £4.50.;Pre-Christian Gnosticism : A Survey of the Proposed Evidences. By Edwin Yamauchi. Tyndale Press,1973. xi+208 pp. £2.25.

Book Review: A Study Of Early Christianity . By Joseph B. Tyson. Macmillan,1973. xv+447 pp. £4.50.;Pre-Christian Gnosticism : A Survey of the Proposed Evidences. By Edwin Yamauchi. Tyndale Press,1973. xi+208 pp. £2.25.