The book, written by Hindu saint Nochur Venkataraman, was presented to Mody by two former ISRO scientists, a PMO statement said.
"Two former scientists of ISRO, B Anantharaman and K S Vishwanathan, today called on the Prime Minister and presented to him a copy of the book 'Atmatirtham', which describes Adi Sankara's life and teachings. The book has been written by Shri Nochur Venkataraman," it said.