administration (3) société (humaine) (3) science (3) itinéraire (3) région (3) productivité (3) pauvreté (3) minéral (3) législation (3) revenu (3) explosif (3) emploi (3) agriculture (3) activité minière (3) Complement (3) Employment (3) Agriculture (3) Accounts (3) Programs (3) Minerals (3) Employees (3) Value (3) Tin (3) Tantalum (3) State, The (3) Science (3) Prices (3) Poverty (3) Political science (3) Persons (3)