?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=A&rft.au=Kumar%2C+A&rft.aulast=Kumar&rft.atitle=Growth+and+Instability+in+Agricultural+Productivity%3A+A+District+Level+Analysis&rft.title=Agricultural+Economics+Research+Review&rft.issn=0974-0279&rft.date=2013&rft.volume=26&rft.pages=31-42&rft.genre=article