Rai Lajpat <br/><br/>
Human potential energy 
Rai Lajpat 
 -  1996 
 - 513p  cm. 
<br/><br/><label>Standard No.: </label>62647 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>Delta:36, N6