"Inversions de polarit\u00E9 (g\u00E9omagn\u00E9tisme)" . . . "Inversions (g\u00E9omagn\u00E9tisme)"@fr . . "550" . "12242038"^^ . . "Inversions magn\u00E9tiques (g\u00E9omagn\u00E9tisme)" . "Magn\u00E9tisme terrestre -- Inversions" .