KOTOYE, AFOLABI. DESIGN AND CONSTRUCTION OF A HEARING AID DEVICE. International Journal of Innovations in Engineering Research and Technology, Maharashatra, India, v. 8, n. 08, p. 71–74, 2021. DOI: 10.17605/OSF.IO/J8N4K. Disponível em: https://repo.ijiert.org/index.php/ijiert/article/view/2814.. Acesso em: 20 nov. 2024.