000 00486nam a2200145Ia 4500
008 130903s9999 xx 000 0 und d
082 _a631.81 N9
245 _aPlant Nutrient Needs, Supply, Efficiency and Policy Issues : 2000-2025
260 _aNew Delhi
_bNational Academy of Agricultural Sciences
_c1997
300 _aviii,329p.
600 _aJ.S.Kanwar ,Ed
600 _aJ.C.Katyal
650 _aFertilisers,Biofertilizers,Plant Nutrition,Sulphur,Green manuring
942 _cGRBK
999 _c83350
_d83350