A rapid rural appraisal of household food security and nutrition in four villages in Luapula Valley, Zambia, in June 1992

carence en vitamine cultivation cultivo cultivos alimenticios deficiencia de vitaminas estado nutricional feeding preferences food crops fruits frutas health services hogares hortalizas households legume malnutrition nutritional status plante alimentaire pratique culturale preferencias alimentarias servicios de salud vegetables vitamin deficiencies zambia zambie