000 00315nam a2200109Ia 4500
008 191031s9999 xx 000 0 und d
100 _aProceeding of the 18th
245 0 _aNutrients balance and fertilizer need in temperate agriculture
260 _b"Int.Potash Instt,Switzerland"
260 _c1984
942 _cBK
999 _c216899
_d216899