This book is a useful reference for teaching Khmer speaking people to learn English. It is successful in helping to form that mental bond between a word and the object it belongs to with simple to understand pictures. Since the caption of the picture is in both English and Khmer, both speakers can communicate to each other. I am even learning words that I had not known before because my student is teaching me how to say them (I do not know how to read Khmer).
I especially like how this book not only instructs a person on English, but also introduces the student to several facets of American life such as holidays, some history, etc.
But a book like this should only be used for Khmer speakers that possess some English literacy or, if not, then an English speaking person should be present. This book cannot and should not be used as a self-teaching English book. While a good book, it is structured in a way that it would fit better in a classroom rather than as a self-teaching study.
Furthermore, this is not a dictionary, so do not take this with you if you plan on visiting Cambodia. However, I do not see many illustrated books on teaching English to Khmer speakers as well written as this one. A major help if you are in the same boat as I am.