Koech, B. G.Yego, Emily C.C.2014-06-232014-06-232014-06-23http://ir-library.ku.ac.ke/handle/123456789/10065Department of psychology, 84p. 1991enTeachers' perception of factors that influence the implementation of 8-4-4 curriculum in schools for the hearing impaired in Nairobi Province and its environsThesis