000 00313nam a2200109Ia 4500
008 191031s9999 xx 000 0 und d
100 _aProceeding of the 13th
245 0 _aIPI- Congress : Nutrient balances and the need for Potassium
260 _b"Int.Potash Instt,Switzerland"
260 _c1986
942 _cBK
999 _c216896
_d216896