puits (1) papier (1) famille (1) environnement (1) science économique (1) abords (agglomération) (1) Variation (1) Paper (1) Nature and nurture (1) Nature (1) Families (1) Euthenics (1) Endowments (1) Economics (1) Ecology (1) Birth order (1) Adaptation (Biology) (1) Educational attainment (1) Use (1) Family (1) Endowments (1)