Gangwar B. <br/><br/>
Research in Farming Systems 

 - New Delhi  Today and Tomorrow's Printers and Publishers  2014 
 - 584p 
<br/><br/><br/>ENGLISH 
<br/><br/><label>ISBN: </label>81-7019-493-8 
<br/><br/><label>Dewey Class. No.: </label>630  / GAN