. . "Frequency" . . "A characterization of the average number of times a visit happens over a period of time."@en . . "Extra-Thematic" . "Extra-Thematic"^^ . . . . "A characterization of the average number of times a visit happens over a period of time."@en . "2007-03-28T17:48:38+02:00"^^ . . . "fre" . "A characterization of the average number of times a visit happens over a period of time."^^ . "11494"^^ . . "Frequency" . "Frequency"^^ . "MJE" .