Describir: Environmental indicators. Indicateurs d'environnement. Oecd core set. Corps central de l'ocde :

  _  _     _____     ______     ___     _    _      ___                ______  
 | \| ||  |  ___||  /_____//   / _ \\  | |  | ||   / _ \\    ____     /_   _// 
 |  ' ||  | ||__    `____ `   | / \ || | |/\| ||  / //\ \\  |    \\    -| ||-  
 | .  ||  | ||__    /___//    | \_/ || |  /\  || |  ___  || | [] ||    _| ||_  
 |_|\_||  |_____||  `__ `      \___//  |_// \_|| |_||  |_|| |  __//   /_____// 
 `-` -`   `-----`   /_//       `---`   `-`   `-` `-`   `-`  |_|`-`    `-----`  
                    `-`                                     `-`