The problems of food economy and orientation of food policy in the Czechoslovak Republic

alimentos alimentos sanos besoin nutritionnel checoslovaquia comportamiento del consumidor consommation alimentaire consumer behaviour consumer expenditure consumer prices consumo de alimentos czechoslovakia estado nutricional food consumption food preferences foods gastos de consumo health health foods living standards mejoramiento nutricional necesidades de nutrientes niveau de vie nivel de vida nutrient improvement nutrientes nutrients nutritional requirements nutritional status precio al consumidor produit alimentaire salud substance nutritive