Polycyclic Aromatic Hydrocarbon (PAHs) Levels in Treated Spent Engine Oil Contaminated Soil from Automechanic Workshop Site in Wukari, Nigeria. LJSIR [انترنت]. 23 أبريل، 2024 [وثق 17 مايو، 2026];2(1):70-7. موجود في: https://lafiascijournals.org.ng/index.php/ljsir/article/view/308