Schlagwort(e): Native language and education Tanzania ; Congresses ; Native language and education Africa ; Cross-cultural studies ; Congresses ; English language Study and teaching ; Tanzania ; Congresses ; English language Study and teaching ; Africa ; Cross-cultural studies ; Congresses ; Language policy Tanzania ; Congresses ; Language policy Africa ; Cross-cultural studies ; Congresses ; Sociolinguistics ; Konferenzschrift 1991 ; Konferenzschrift 1991 ; Konferenzschrift 1991 ; Konferenzschrift 1991 ; Tansania ; Sprachunterricht ; Sprachpolitik