?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=S&rft.au=Panwar%2C+S&rft.aulast=Panwar&rft.atitle=Pre+harvest+forecasting+of+crop+yield+using+non-linear+regression+modelling%3A+A+concept&rft.title=Indian+Journal+of+Agricultural+Sciences&rft.issn=0019-5022&rft.date=May+2017&rft.volume=87&rft.pages=685-689&rft.issue=5&rft.genre=article