Reni Banowati, Istiningruma and Intan, Permatasaria and Idrus Bambang, Iryantob (2014) TEST METHOD VERIFICATION OF Fe AND SiO2 IN INDUSTRIAL WATER BY UV-VIS SPECTROPHOTOMETRY AT PT KRAKATAU STEEL. Proceeding of International Conference On Research, Implementation And Education Of Mathematics And Sciences 2014. (Submitted)