000 00321nam a2200133Ia 4500
008 230108s9999 xx 000 0 und d
100 _aSingh A.
245 0 _aSoil Nutrient Management for Sustainable Agriculture
260 _bPointer
260 _c2013
365 _b1300.00
650 _aSoil science
942 _cBK
999 _c256319
_d256319