000 00289nam a2200121Ia 4500
008 161121s9999 xx 000 0 und d
100 _aInternational Potash Institute
245 0 _aAgricultural yield potentials in Contine
260 _cNIL
365 _b0
650 _aNIL
942 _cBK
999 _c91033
_d91033