With the permission of the publisher and the authors, we have made internally peer-reviewed but unformatted drafts of all 18 chapters of The Evolution of Multicellularity available for download. Please note that there may be substantive differences between these pre-publication versions and the final book chapters.
The full book is available on Amazon and direct from the publisher in hardcover and ebook formats. The paperback is due out in 12-18 months, at which point the price of the ebook will drop.