Abdulaziz YI, Mahmood SMA. Recovery of Base Oil from Spent Automobile Oil Using Elementary and Binary Solvent Extraction. NUCEJ [Internet]. 2017 Jan. 27 [cited 2024 Dec. 23];19(2):370-84. Available from: https://oldjournal.eng.nahrainuniv.edu.iq/index.php/main/article/view/30