I am very familiar with the Assimil method for many years. Finally I chose to learn Khmer after many other languages. This is an ideal course, pronunciation is absolutely correct (which was confirmed to me by my staff in Cambodia), and didactics is such that it facilitates easy learning this difficult language. What also attracted me a lot in this 'Superpack' was the additional MP3 what saves you import audio CD into iTunes, because you can draw directly into an MP3 playlist. Finally, another excellent product Assimil!
