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Institut Fondamental d’Afrique Noire (IFAN), DAKAR, SENEGAL

Université Gaston Berger de Saint-Louis, SAINT-LOUIS, SENEGAL

Centre International des Civilisation Bantu (CICIBA), LIBREVILLE, GABON

Université Omar Bongo, LIBREVILLE, GABON

Department of Political Sciences, University of South Africa, PRETORIA, SOUTH AFRICA