European Fertilizer Manufacturers' Association [ EFMA | Comité Marché commun de l'industrie des engrais azotés et phosphatés | Association des producteurs européens d'azote | Centre d'étude de l'azote ]
European Fertilizer Manufacturers' Association [ EFMA | Common Market Committee of the Nitrogenous and Phosphatic Fertilizers Industry | European Nitrogen Producers' Association | Nitrogen Study Centre ]