Brāhmaṇijaṃ janmarahasyaṃ

really a fantastic work for Dravidians which helps to know their existence & past glory of their ancestor's lives.basically the research is mainly depended upon numerology.vast collections from different write-up's are spreaded all over the book.It also explains how the world religions and gods are made by aryans to establish themselves as a world rulers......have a quick look at this book and I am sure you will buy this book,if you are interested in history.