Sylivester, Johanes Ubadilishaji msimbo bungeni na athari zake kwa wasikilizaji Johanes Sylivester - Dar es Salaam : University of Dar es Salaam 2011 - xiii,103p. ill. 30cm. Includes bibliographical referencesThesis: MA (Kiswahili)-University of Dar es Salaam Subjects--Topical Terms: LC Class. No.: THS EAF PL8701.S9