"AIR POLLUTANTS MONITORING IN THE LOWER ATMOSPHERE OF AKWANGA LGA USING FRACTIONAL STEP TECHNIQUE" (2021) FULafia Journal of Science and Technology, 7(2), ص 19–24. موجود في: https://lafiascijournals.org.ng/index.php/fjst/article/view/146 (تاريخ الوصول: 17 مايو 2026).