Heine, Bernd, 1939- Status and use of African lingua francas / Bernd Heine. - Munchen : Weltforum Verlag, 1970. - 206p ; 24 cm. - Afrika-Studien Nr. ; 49 . Includes bibliography. Closed access. ISBN: 3803900336 Subjects--Topical Terms: African languages.Lingua francas--Africa.