Sriram, Rajalakshmi <br/><br/>
Engeniring in social intervention Vol I 

 - Concept Publishing Company Pvt. Ltd  New Delhi  2014 
 - xxxv;263 p 
<br/><br/>
<br/><br/><br/>E 
<br/><br/><label>Universal Decimal Class. No.: </label>300.71