Veettil, Chellattan Prakashan  <br/><br/>
Productivity and efficiency Impacts of zero tillage wheat in Northwest Indo-Gangetic Plains / 
edited by:Krishna, Vijaya Vijesh
Veettil, Chellattan Prakashan and Krishna, Vijaya Vijesh 
 - Ahmedabad :  Sardar Patel Institute of Economic & Social Research,  Jul-05 
<br/><br/> IEG 
<br/><br/><br/>English