“Levels of Zinc (Zn), Copper (Cu), Iron (Fe), and Cadmium (Cd) in Soil, Rice Stalk, and Oryza Sativa Grain in Ishiagu Rice Field, Ebonyi State, Nigeria; Human Health Risk” (2022) Journal of the Nigerian Society of Physical Sciences, 4(4), p. 891. doi:10.46481/jnsps.2022.891.