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Usman, M., Gadaka, M. and Maazu, A. 2021. Evaluation of Some Toxic Heavy Metals in Rice and Beans Samples Cultivated in Yobe State, Nigeria. East African Journal of Health and Science. 3, 1 (Aug. 2021), 145-151. DOI:https://doi.org/10.37284/eajhs.3.1.396.