000			00303nam a2200121Ia 4500
008			140317s9999 xx 000 0 und d
082			_a631.8
100			_aInter. Potash Instt.
245			_aDevelopment of k-fertilizer recommendation.
260			_aBern _bIPI _c1990
300			_a406
942			_2ddc _cBK
999			_c12508 _d12508