Prie cliquer :
http://www.youtube.com/watch?v=lPvHtjRvWFM
Je ne sais pas combien côute ce filtre ? Commercial ou humanitaire ?
Il existe un autre procédé plus simple et ne coûte rien , c'est de remplir
l'eau dans des bouteilles en plastiques et les laisser exposer au soleil .
Pheatarakpheap
ck
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