Yousef M.J. Omar, Nasr, M. Radzi bin Abas, Kamal Aziz Ketuly, and Norhayati Mohd. Tahir. “Chracterization of Solvent-Extractable Hydrocarbons in Airborne and Roadside Soil Particles of Kuala Lumpur, Malaysia”. Malaysian Journal of Science 21, no. 1&2 (April 25, 2002): 171–178. Accessed December 5, 2024. http://ijie.um.edu.my/index.php/MJS/article/view/8606.