Praduman Kumar et al. <br/><br/>
Sustainability of rice-wheat based cropping systems in India: socio-economic and policy issues 

 -  1998 
 - p.A152-58 
 - 26 Sep 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Wheat - India<br/>Rice - India<br/>Agricultural products - India<br/>Crops - India<br/>Cultivation