000 00430nam a2200145Ia 4500
008 140224s9999 xx 000 0 und d
082 _a631.41:631.811 P3
245 _aAssessment of soil nutrient balance;approaches and methodologies
260 _aRome
_bFAO
_c2003
300 _a87p.
600 _a R.N. Roy and others
600 _aRoy, R.N. et al
650 _aSoil science,Soil nutrient balance,Soil nutrition
942 _cBK
999 _c91753
_d91753