Alexandre Lalba (1), Jean Sibiri Zoundi (2), Jean-Pierre Tiendrébéogo (1)
septembre 2004, Technical document
SUTTER Pierre Luc
Juillet 2010, Technical document
CEDEAO/ECOWAS
2004, Technical document
D.B. Sarpong and V.K. Nyanteng
2002, Technical document
LOUIS GOREUX
2003, Technical document
INICA
2004, Technical document
LAREHDO
2003, Technical document
Bio Goura Soule
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Lamissa DIAKITE and Hamady DJOUARA
2002, Technical document
Jean-Philippe Colin
2004, Technical document