Singh, Joginder <br/><br/>
Factors in declining crop diversification: case study of Punjab 

 -  2004 
 - p.5607-614. 
 - 25 Dec 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crops - India - Punjab<br/>Agricultural policy - India - Punjab<br/>Agricultural production - India - Punjab<br/>Agricultural production