effet (4) éducation (4) Education (4) Finance (4) Education (4) Finance (4) recherche (3) politique (3) santé (3) Students (3) Schools (3) Research (3) Health (3) Research (3) Health (3) Students (3) papier (2) expérience scientifique (2) Children (2) Agreement (2) School children (2) Paper (2) Gifts (2) Children (2) Average (2) Ability (2) Opportunity (2) Size (2) élite (2) état (1)