Chepkoech E. PERCEPTION OF TEACHERS TOWARDS TEACHER PERFORMANCE APPRAISAL AND ITS EFFECT ON SCHOOL ACADEMIC PERFORMANCE IN TRANS-NZOIA COUNTY, KENYA. as [Internet]. 2015Oct.31 [cited 2024Nov.17];1(6):24-1. Available from: http://webmail.ijrdo.org/index.php/as/article/view/2338