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

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