“ASSESSMENT OF THE SPATIAL VARIATION AND SOURCE APPORTIONMENT OF AIR POLLUTION BASED ON CHEMOMETRIC TECHNIQUES: A CASE STUDY IN THE PENINSULAR MALAYSIA”. Jurnal Teknologi (Sciences & Engineering) 77, no. 1 (October 20, 2015). Accessed September 13, 2026. https://journals.utm.my/jurnalteknologi/article/view/4235.