Phytoassessment of a Waste Engine Oil-polluted Soil Exposed to Two Different Intervals of Monitored Natural Attenuation Using African Yam Bean (Sphenostylis stenocarpa)

B. Ikhajiagbe, G.O. Anoliefo, M.A. Jolaoso and E.O. Oshomoh

Pakistan Journal of Biological Sciences 16 ( 14 ): 680 - 685 , 2013