Morallo, Narcisa T. “Carbon Monoxide and Hydrocarbon Contains of Motorcycles: Metro Dumaguete, Philippines”. Jɫ������̳ Multidisciplinary ɫ������̳ 25, no. 1 (June 24, 2016): 70–79. Accessed June 8, 2025. /index.php/jpair/article/view/390.