SINGH N.M <br/><br/>
UGC-CSIR JRF\ NETSPECIFIC PHYSICAL SCIENCES 

 -  Danika Publishing Company New Delhi   2007 
<br/><br/><label>ISBN: </label>81 89301 05 5 
<br/><br/><label>Dewey Class. No.: </label>REF  /  530  / SIN/U