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\bibitem{Ammann1990} Ammann, J. (1990, 02.04.1990). {\textquotedblleft}La cigarette est d{\'e}mod{\'e}e{\textquotedblright}, disent les sp{\'e}cialistes de la lutte antitabac. \textit{La Libert{\'e}}, 6.

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