London: Sidgwick & Jackson, 1966. 8vo, cloth boards, dustjacket, pp 260. D.j. slightly marked, light foxing to endpapers, o/w very good condn. The story of the upheaval caused by the publication of Immanuel Velikovsky's "Worlds in Collision" in 1950. Includes a chapter by Velikovsky in which he gives "Additional Examples.....