The Wonder Effect, Kornbluth, Pohl, Vintage Paperback Book, Ballantine #F-638, Science Fiction, PBO

Vintage Paperback Book, "The Wonder Effect", C. M. Kornbluth and Frederik Pohl, 1962, Ballantine #F-638. Paperback Original (PBO). Grades GD to VG. Some cover wear, some edge wear, some corner wear multiple creases, some spine splitting, some spine roll, some pencil marks on top and bottom edges, pages beginning to discolor.