Sri Aurobindo Ashram Trust <br/><br/>
Complete works of Sri Aurobindo, Vol 29  Letters on yoga -IIPractice of the Internal yoga 

 - Pondicherry  Sri Aurobindo Ashram Trust  1997 
 - 522p. 
 - The Complete Works of Sri Aurobindo .
<br/><br/><label>Dewey Class. No.: </label>181.4  / N97.29 "R"