[Contribution prices and membership of agricultural cooperatives [agricultural products; marketing]]

agricultural products analyse économique análisis económico comercialización cooperativa commercializzazione cooperativa cooperación cooperation cooperativas de productores cooperative di produttori cooperative marketing cooperative processing cooperazione coopération coopérative de producteurs coopérative de transformation economic analysis industrias cooperativas mathematical models modelli matematici modelos matemáticos modèle mathématique precios prezzi prices prix prodotti agricoli producer cooperatives productos agrícolas produit agricole trasformazione cooperativa vente en coopération