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www.textesrares.com/philo19/livres.php4?nom_aut=Lamennais&prenom_aut=F%E9licit%E9+%5BRobert+de%5D&titre=D%E9claration+pr%E9sent%E9e+au+Saint-Si%E8ge&annee_liv=1831 (port 80)