00359nam a2200121Ia 4500001000500000005001700005008004100022082001600063100001100079245008600090260004700176650001400223243020261006003624.0120911s9999    xx            000 0 und d  a546.383 FRE  aEdited  aDiagnosis and correction of potassium deficiency in major tropical crops / Edited  aS.E. Asia program of the potash institutes  aPotassium