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​http://www.journaldelenvironnement.net/article/la-france-ne-pourra-plus-exporter-de-civelles-hors-europe,20577?token=3114d1ea5ef7f00ecad37a72e3c6f377&xtor=EPR-9

Trouvailles
​http://www.r-bloggers.com/make-r-speak-sql-with-sqldf/