Barnal J D <br/><br/>
Vigyan ki samajik bhumika 

 - Delhi, India  Granth Shilpi  2000 
 - xii,606p 
<br/><br/><br/>Acc. No. 91267 is gifted book by krishna Kumar 
<br/><br/><label>ISBN: </label>81-86684-38-7 
<br/><br/><label>Source: </label>TextBook