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1998, Report
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N. Dembélé
1995, Ph.D. thesis
O. Sanogo and D. Mariko and L. Diakité
1998, Report
D. Kébé and M. Keïta and S. Keita
2005, Report
IER/ECOFIL
1996, Report
ASCOMA
2001, Report
Y. Dombia and L. Diarra
1997, Report
1997, Report