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Ukpaka, C. P, Professor, Department of Chemical/Petrochemical Engineering Rivers State University Port Harcourt, Nigeria (Nigeria)
Ukpaka, C. P., Professor, Department of Chemical/Petrochemical Engineering, Rivers State University Port Harcourt, PMB 5080, Rivers State, Nigeria. (Nigeria)
Ukpaka, C. P, Department of Chemical/Petrochemical Engineering Rivers State University Port Harcourt, Nigeria (Nigeria)
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