000 00302nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aVlek (Paul LG) Ed
245 0 _aMicronutrients in tropical food crop production
260 _bMartinus Nijhoty
260 _c1985
365 _b1056
942 _cBK
999 _c215296
_d215296