Worlds in Collision Velikovsky, Immanuel Popularity → Current 35 Peak 85 Niche 90 Worlds in Collision by Immanuel Velikovsky. Kangaroo Books 1977
Worlds in Collision Immanuel Velikovsky Immanuel Velikovsky Popularity → Current 28 Peak 75 Niche 85 Abacus 1972 391 pages
