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Itam, Y. B and Ogar, V. O. and Ekpenyong, E. E. and Ebong, E. E. (2024) Assessment of Heavy Metal Contamination and Risk Associated with Quarrying Activities in Marksino Concession Area, Akamkpa. International Journal of Environment and Pollution Research, 12 (2). pp. 12-39. ISSN 2056-7537(print), 2056-7545(online)