Items where Author is "Okpara, Kingsley"
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Iyama, William and Okpara, Kingsley and Techato, Kuaanan (2021) Assessment of Heavy Metals in Agricultural Soils and Plant (Vernonia amygdalina Delile) in Port Harcourt Metropolis, Nigeria. Agriculture, 12 (1). p. 27. ISSN 2077-0472