Khamis,Halima M. The Impact of In Service Training on Teachers Performance : A Case of Chakechake Secondary Schools in Pemba / by Halima Muhammed Khamis - Dar es salaam: The Open University of Tanzania, 2017 - xvii,83p.: ill.; 30 Cm Includes Bibliographical References and Index Subjects--Topical Terms: Dewey Class. No.: EA DIS 658.4049678 KHA