"The length of time over which the change takes place. Cellular phone and paging device ownership by adolescents has proliferated over the past years."@en . . . "2005-08-02T12:09:59+02:00"^^ . . . "Duration" . . . "The length of time over which the change takes place. Cellular phone and paging device ownership by adolescents has proliferated over the past years."@en . . "Peripheral" . "Peripheral"^^ . . . . . . "Dur" . "8780"^^ . "The length of time over which the change takes place.\nCellular phone and paging device ownership by adolescents has proliferated over the past years."^^ . "Duration" . . "Duration"^^ . . . . . "JKR" .