IYER, Raghavan N. <br/><br/>
The Gupta Vidya  : God, Nature  and man  xvii, 733p 
/Raghavan Narasimhan Iyer 
 -  Theosophy Books  2020 
<br/><br/> it includes bibliographical references and index <br/>vol1 
<br/><br/><label>ISBN: </label>9781733465007