00462nam a2200145Ia 4500008004100000082002100041100003500062245006300097260005000160300000800210650004100218650003400259653001100293653001200304170901s1985    xx            000 0 und d  a631.830913bI-5P  aInternational Potash Institute 0aPotassium in the Agricultural Systems of the Humid Tropics  aBangkokbInternational Potash Institutec1985  a405  aAgriculture and related technologies  aTechnology (Applied sciences)  aPotash  aTropics