"Psychic Roulette", 1973 Written By George E.Vandeman
 
To quote the back of the book: "Easily the most controversial book of the decade. Ignore it at your own risk."
 
"Psychic Roulette" by George Vandeman is one of the rare books that makes solid, reasonable connections in the occult world between the psychic world, the spiritualistic world and the UFO world.