The book was one of the most prominent in research results of the French author George Coedes ( 1886 - 1969 ) with original title in French: Histoire ancienne des Etas hindouises d'Extreme-Orient. The book published firstly in the year of 1944 of the last century. Vietnamese translation that you are holding is loyal to the French original, but another new appendix is attached including some historic maps, genealogical records of some dynasties and compared list of proper names & place names in Sanskrit - Pali - Latin - Chinese - Vietnamese languages. And it is one undisputable other advantage of the translated edition.