000 00314nam a2200133Ia 4500
008 230108s9999 xx 000 0 und d
100 _aPaul L.G
245 0 _aMicronutrients in Tropical Food Crop Production
260 _bMartinus
260 _c1985
365 _b0.00
650 _aSoil science
942 _cBK
999 _c249557
_d249557