Jean Manco, Ancestral Journeys: The Peopling of Europe from the First Venturers to the Vikings

Had to gloss over large parts where the book discussed genetic mutations between DH3a1bn and DH3a1bnx and how it could be due to an influx from AB1jyt34 at a later date. The conclusion seems to be that the peoples of Europe were far more mobile in prehistory than has previously been supposed, and that there were some mass migrations where indigenous people were mostly replaced rather than a change in culture or technology being relective of a static population adopting new methods or beliefs, or the changes being accompanied by an elite rather than significantly altering the genetic makeup. Of course, all of these models have been true at one time or another