00625nam a2200205Ia 4500 170901s2003 xx 000 0 und d 633.188911 S48N Singh, Yadvinder Nutrient Management For Sustainable Rice-Wheat Cropping System 1 New Delhi National Agricultura Technology Project 2003 412 Agriculture and related technologies Technology (Applied sciences) Nutrient management Rice-Wheat cropping system Nayyar, V. K. Singh, Bijay ddc BK 15269 15269 0 0 ddc 0 0 RAU RAU 2017-10-18 PAU 0 633.188911 S48N 54680 2017-10-18 2006-07-25 BK