. . . "Avant-propos"@fr . . . "Avant-propos" . . . . . . "236" . . "231-236" . "231-236" . "Avant-propos" . "236" . "/contribution/ext-000036021" . "231"^^ . . "\u00C9tudes g\u00E9n\u00E9rales" . . . . . . "231"^^ . .