Roy, B <br/><br/>
UGC-CSIR JRF/NET :  Chemical Sciences / 
B Roy ; M Gagan 
 - New Delhi:  Danika Publishing Company,  2019. 
 - 256p 
<br/><br/><label>ISBN: </label>9788189301033 
<br/><br/><label>Dewey Class. No.: </label>540  / ROY/U