400 bildungspolitik china congresses disciplines ethnicidentity europe frenchlanguage history id1655 kulturelleidentitat languageandeducation languageandlanguages languagearts languagepolicy languages languagesincontact linguisticminorities linguistics minderheitensprache multilingualism nationaleminderheit politicalaspects senegal sociallifeandcustoms sociolinguistics soziolinguistik sprachbewusstsein sprachlicheminderheit wolof(africanpeople) woloflanguage