Sharon, O., Adhiambo, O. E. and Alfred, O. (2024) “A Contribution of Picture Communication Boards on expressive Language Skills of Learners with Hearing Impairment ”, African Journal of Education,Science and Technology (AJEST), 8(1), pp. Pg. 82–95. Available at: https://ajest.org/index.php/ajest/article/view/6 (Accessed: 3 April 2026).