Satyadharma Saraswati Swami <br/><br/>
Yoga tattva upanisad - essence of yoga.  Sanskrit, English.  
translated by Ruth Perini. 
 -  Amazone purchase 
 - 220 
 - yoga upanisad series 2 .
<br/><br/> Original Sanskrit text with transliteration, translation and commentary.  
<br/><br/><label>ISBN: </label>9781718768284 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Yoga
<br/><br/><label>Dewey Class. No.: </label>181.45 Sa84 Y   / 29646