00531nam a2200157Ia 4500008004100000082002500041245010500066260005700171650002600228650002300254650002800277650001800305650001700323650001700340700001600357220204s9999    xx            000 0 und d  a631.445.7:061.3bJOS 0aProceedings of the conference on classification and management of tropical soils, 15-20 August, 1977  aKuala LumpurbMalaysia Society of Soil Sciencec1977  aPlant tissue analysis  aRubber fertilizers  aRubber foliar diagnosis  aSoil analysis  aSoil genesis  aSoil mapping  aJoseph, K T