000 00310nam a2200121Ia 4500
008 180721s9999 xx 000 0 und d
100 _aArchana singh
245 0 _aSoil nutrient management for substainable agriculture
260 _bPointer Publishers
260 _c2013
365 _b1300.00
942 _cREF
999 _c147655
_d147655