. "mathematical parameter used to describe planetary magnetic field lines"@en . . . . . . . . . . . . "Linee di flusso di campo magnetico"@it . . . . . . . . . . . . . . . . . . . . . "L-shell"@en . . . . . . . . . . . "Parametro L di McIlwain"@it . . . . .