Do water birds really destroy irrigated crops in West Africa ? Regional project on research and training in the protection of crops against grain eating birds in West Africa /Tréca, Bernard RIZ IRRIGUE ANIMAL NUISIBLE OISEAU AQUATIQUE DEGATS FACTEUR ECOLOGIQUE SURVEILLANCE 1983 text https://www.documentation.ird.fr/hor/fdi:16437 fdi:16437 Tréca Bernard. Do water birds really destroy irrigated crops in West Africa ?. 1983, 15 EN SENEGAL MALI