SINGH, Balraj. <br/><br/>
Protected Cultivation of Vegetable Crops. 

 - Ludhiana.  Kalyani Publishers.  2005 
 - 168p. 
<br/><br/><label>ISBN: </label>81 272 2473 1 
<br/><br/><label>Dewey Class. No.: </label>635.04