This book is an outstanding work of scholarship, which builds on a long history of research and publication in this field dating to the 1890s. The author has made extensive use of Chinese sources in the original and prepared a new edition of the Old Turkic inscriptions. It also provides new views on the dating and authorship of the inscriptions. In short, it is the leading edition for scholarly use by Turkologists, but is also open to those interested in the history of the Early Turks and Medieval Central Eurasia. An essential source book and reference work.