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West African Gas Pipeline (WAGP) project and its impact on the region's development
Ndumbe, J. Anyu, (2005)
L' Afrique de l'Ouest, entre espace, pouvoir et société : une géographie de l'incertitude
Igue, Ogunsola John, (2006)
West African regional economic integration : Nigerian policy perspectives for the 1990s
Obiozor, George A., (1994)