AKO,Rose Mwaipopo OEC 105: Social Science Research Method I/ Rose Mwaipopo Ako, Abu A.K Mvungi and Anku J. Sanga - Dar es salam The Open University of Tanzania 1999 - iv,153p.; 27cm Include bibliographical Reference ISBN: 9987000789 Subjects--Topical Terms: LC Class. No.: 300.072 Dewey Class. No.: 300.072