Worlds in collision
"Are the planets of our solar system as fixed in their orbits as twe have always believed them to be? They ahve not been, according to Dr. Velikovsky, and may not always be in the future. He contends that mroe than once within historic times they ran amok and caused enormous cataclysms; the earth became a primeval chaos lashed by tornadoes of cinders; the skies darkened; land masses were destroyed; and large portions of the human race perished."--From the dust-jacket front flap
Print Book, English, 1950
Doubleday & Co., Inc., Garden City, N.Y., 1950