000 00298nam a2200133Ia 4500
008 230108s9999 xx 000 0 und d
100 _aIRRI
245 0 _aProceedings: Methods of K-Research in Plants
260 _bIPI
260 _c1989
365 _b0.00
650 _aAgronomy
942 _cBK
999 _c249357
_d249357