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Nigeria
Nganje, TN, Edet, AE, Ekwere, SJ . 2007. Concentrations of heavy metals and hydrocarbons in groundwater near petrol stations and mechanic workshops in Calabar metropolis, southeastern Nigeria
Goni, IB . 2005. Conceptual model of recharge in the Nigerian sector of the Chad basin using Cl mass balance
Goni, IB . 2005. Conceptual model of recharge in the Nigerian sector of the Chad basin using Cl mass balance
Kogbe, CA, Ajakaiye, DE, Matheis, G . 1983. Confirmation of a rift structure along the Mid-Niger valley, Nigeria
Federal Republic of Nigeria . 1999. Constitution of the Federal Republic of Nigeria
Lawal, MA . 2003. Constraints to small scale mining in Nigeria: Policies and strategies for development.
Olaniyan, JAO, Haruna, JD, Schoeneich Aku and Associates . 1998. Consultancy services for the feasibility study of degraded minelands of Plateau State, Volume 4
Ojuri, OO, Ola, SA, Rudolph, DL, Barker, JF . 2009. Contamination potential of tar sand exploitation in the western Niger-Delta of Nigeria: baseline studies
Ojuri, OO, Ola, SA, Rudolph, DL, Barker, JF . 2010. Contamination potential of tar sand exploitation in the western Niger-Delta of Nigeria: baseline studies
Edet, AE, Merkel, BJ, Offiong, OE . 2004. Contamination risk assessment of a freshwater groundwater using the distribution and chemical speciation of some potentially toxic elements in Calabar (southern Nigeria)
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