000 00351nam a2200133Ia 4500
999 _c23926
_d23926
082 _a631.422
_bPOR/SY
100 _aPortch, Sam
245 _aSystematic Approach to Soil Fertility Evaluation and Improvement
260 _aChina
_bModern Agriculture and Fertilizers
300 _a62
546 _aEnglish
700 _aHunter,Arvel
942 _2ddc
_cREP