administration (1) spectacle (1) province (1) pollution (1) papier (1) plomb (1) brume (1) pollution de l'air (1) couverture (1) charbon (1) point (1) densité (1) produit intérieur brut (1) densité de population (1) République populaire de Chine (1) Density (1) Treatment (1) Control (1) Prevention (1) Accounts (1) Gross domestic product (1) Haze (1) Will (1) Weights and measures (1) Values (1) Value (1) Turning (Lathe work) (1) State, The (1) Population density (1) Population (1)