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῎῍῏ῌ + Chris Reij and Ann Waters-Bayer (,**+) : Farmer Innovation inAfrica, A Source of Inspiration for Agricultural Development, Earthscan Publications Ltd, London , Direction de la Foresterie Rurale (,**-) : Evaluation duProgramme National de Foresterie Villageoise de +33+ - FAO (,***) : Global
Forest Resources Assessment ,*** . Fontés J. et Guinko S. (+33/) : Carte de lavégétation et de l’occupation du sols du Burkina Faso, Institut de la Carte
Internationale de la végétation, Laboratoire d’écologie terrestre, Toulouse, France/ Ministe◊re de l’Economie et des Finances (+332) : Etude thématique sur le milieu
physique 0 Ministe◊re de l’Environnement et de l’Eau (+332) : Politique Forestie◊reNationale 1 René Marceau Rochette (+323) : Le Sahel en lutte contre ladésertiﬁcation, Verlag Josef Margraf, Weikersheim 3 SP/CONAGESE (,**+) :Etat de l’environnement au Burkina Faso    No. 0, ῍,**/῎19