?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=R+K&rft.au=Gupta%2C+R+K&rft.aulast=Gupta&rft.date=2005&rft.title=Upscaling+zero+tillage+in+rice+fallow+lands+of+the+Indo-Gangetic+Plains+Some+experiences&rft.genre=proceeding