Studi efektivitas pemanfaatan bulking agent dalam proses bioremediasi tanah terkontaminasi minyak bumi (Objek studi : PT. Chevron Pacific Indonesia Minas, Riau) = Efectiveness study of bulking agent utilization on the bioremediation process of oil contaminated soil (Object of study : PT. Chevron Pacific Indonesia Minas, Riau). / Faiz Abdurrahman