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Sources :
http://drogues.chez.com/drogues/protoxyde.htm
http://www.toxquebec.com/livre_drogues/fr/index_substances_volatiles.html
http://www.psychoactif.org/psychowiki/index.php?title=Protoxyde_d%27azote
http://www.psychonaut.com/dissociatifs/41216-les-effets-du-protoxyde-d-azote.html
http://www.analgesique.wikibis.com/protoxyde_d_azote.php
http://pravarini.free.fr/gaz-N2O.htm
http://www.know-drugs.ch/2012/f/info-substances/gaz-hilarant-poppers.htm
http://www.asud.org/2013/01/23/reduction-des-risques-5/
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