List of Articles Ali Akbar Ghafourinejad Article 1 - The assessment of efficiency of saponin as bio-surfactant in removal of nickel and vanadium from soil contaminated by petroleum, Case study: Ahwaz oil pumping unit 10.22034/ap.2018.538374 Behnoush Khoshmanesh Rasoul Ghadami Ali Akbar Ghafourinejad Anthropogenic Pollution , Issue 1 , Year , Winter 2018