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

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