00486nam 2200169z- 450 9910773551403321(WsH)locbebd(CKB)5490000000496184(EXLCZ)99549000000049618420230719c1996uuuu -u- -engOfficial Languages: A Worldwide Reference SurveyOfficial LanguagesBOOK9910773551403321Official Languages: A Worldwide Reference Survey3667439UNINA