Sanskrit etymological dictionary

I hope this book will be useful to the Sanskrit students and also for everyone who wants to find out more about worldwide languages and religions.
With many references to ancient and current languages, and to Christianity, Brahmanism, Islam, etc...
I tried to make this book simple and easy to use. Obviously, its size shows that it is not complete, but because I have explained most of prefixes, particles and verbs, you will have access to many supplementary words.