000 00281nam a2200121Ia 4500
008 161121s9999 xx 000 0 und d
100 _aCHRISTIANSON (C Bruce)
245 0 _aSoil fertility and fertilizers managemen
260 _cNIL
365 _b0
650 _aNIL
942 _cBK
999 _c95942
_d95942