While the "occult" version remains elusive, there are legitimate books with similar names that deal with naturalism rather than magic: Scientific Perspective : A well-known book titled was written by Maruti Chitampalli
: The text is variously attributed to an anonymous sage in the Himalayas, a sage named Neelkanth, or a woman/Yakshini named Nilavanti. nilavanti granth pdf
While the "occult" version remains elusive, there are legitimate books with similar names that deal with naturalism rather than magic: Scientific Perspective : A well-known book titled was written by Maruti Chitampalli
: The text is variously attributed to an anonymous sage in the Himalayas, a sage named Neelkanth, or a woman/Yakshini named Nilavanti.