00533    a2200121   4500082001600000245017600016260006000192300001600252650002600268650005200294650004100346650002400387  a631.83bPOT  aPotassium in tropical crops and soilsbproceedings of the 10th colloquium of the international potash institute held in december 1973 in Abidjan/republic of Ivory Coast     aSwitzerlandbInternational potash institutec1973g1973  a603p.c23cm  aPotassium fertilizers  aFertilizers,soil conditioners,growth regulators  aAgriculture and related technologies  aSpecific techniques