WASET
    N. O. Omaka and  I. F. Offor and  R.C. Ehiri ,  Fe, Pb, Mn, and Cd Concentrations in Edible Mushrooms (Agaricus campestris) Grown in Abakaliki, Ebonyi State, Nigeria.   journal   = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2014, vol. 85(1). 84 - 88
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/9997690.