000 00332nam a2200121Ia 4500
008 140113s9999 xx 000 0 und d
082 _a63:581.53 M1
100 _aInternational Potash Institute
245 _aAgiculural yield potentials in confinental climates
260 _a1981
_bIPI
_cSwitzerland
300 _a295
942 _cBK
999 _c60848
_d60848