Osakwe SA, Maduako AUC. RECLAMATION OF WASTE LUBRICATING OILS USING GROUND PERIWINKLE SHELL ADSORBENTS. Pakistan Journal of Scientific & Industrial Research [Internet]. 2004 Aug. 30 [cited 2025 Jun. 8];47(4):312-5. Available from: http://www.biostaging.pjsir.org/index.php/biological-sciences/article/view/1541