Olubodun, S., and G. Eriyamremu. “NUTRIENT CONTENTS AND METAL ACCUMULATION IN VIGNA UNGUICULATA L (BEAN) SEEDLINGS IN PETROLEUM CONTAMINATED SOILS”. Journal of Chemical Society of Nigeria, vol. 41, no. 2, Feb. 2017, http://www.journals.chemsociety.org.ng/index.php/jcsn/article/view/72.