temps (durée) (1) enquête (1) norme (1) recherche (1) région (1) santé publique (1) besoin (1) analyse (1) éducation (1) document (1) distribution (1) dispersion (1) Education (1) Showing (1) Methods (1) Women (1) Values (1) Time (1) Sex (1) Research (1) Public health (1) Population (1) Men (1) Manufacturers' agents (1) Hypothesis (1) Education (1) Dispersion (1) Cycles (1) Commission merchants (1) Change (1)