Worlds in Collision by Immanuel Velikovsky. MacMillan Company. 1950. First Printing stated. No additional printings listed. 401 pages. Hardcover with Dust Jacket. DUST JACKET: Chip at the top of the spine. Wear along dj edges. Price-clipped. Now protected in mylar dj cover. 1/2" tear from the top of the rear joint. BOOK: Light edge wear to cover. Bright gilt lettering on spine and front cover. Light tanning inside front cover and to pages. Tanning not effecting the page flexibilty. Tanning or light soilng to the top edge of the page block and some on the leading edge of the page block. No previous owner markings. No folds, creases or tears to pages. Binding is tight with no looseness to pages. Not ex-library, not remaindered, not a facsimile reprint. For sale by Jon Wobber, bookseller since 1978. CH05a

"ARE THE PLANETS of our solar system as fixed in their orbits as we have alwaysa believed them to be?
They have not been, according to Dr. Velikovsky, and may not always be in the future. he contends that more than once within historic times they have run amok and caused enormous cataclysms:...land masses were destroyed; and large portions of the human race perished.
...the worst series of catastrophies occurred about 1500 B.C., in the days of Moses and of Joshua, and aother series took place inthe 8th and 7th centuries B.C...set the ancients revising their calendars from what had been a year of 360 days. " from blurb on the dust jacket.