A.-K. Mohammed A-H, K. Hussain H, J. Sadiq R. The Effect of Solvent Extraction of Light Lubricating Oil on Viscosity Index and Chemical Composition. ijcpe [Internet]. 30Dec.2007 [cited 14Aug.2021];8(4):1-2. Available from: https://ijcpe.uobaghdad.edu.iq/index.php/ijcpe/article/view/490