Agricultural commodity projections, 1970-1980, vol 1, part 1, general outlook

agricultural products alimentos balance commerciale balance of trade balanza comercial besoin nutritionnel comercio internacional commerce international consommation alimentaire consumo de alimentos demand demanda demande developed countries developing countries excedentes exportaciones exportation exports food consumption food supply foods forecasting human nutrition importaciones importation imports international trade monde mundo necesidades de nutrientes nutrition humaine nutritional requirements production produit agricole produit alimentaire suministro de alimentos surpluses tendance tendencias trends world