Nayar, N. K. <br/><br/>
Unique Quintessence of Physics  : An Integral Part of Preparation for Civil Services preliminary optional paper 
/ by N. K. Nayar 
 - New Delhi:  Unique Publishers,  2012. 
 - 746p. 
<br/><br/><label>ISBN: </label>8183571867 
<br/><br/><label>Dewey Class. No.: </label>530  / NAY/U