Budi I, Budi A. Blind Sonar as a Tool To Help Blind People Walk. Inovasi Pembangunan : Jurnal Kelitbangan [Internet]. 1Apr.2015 [cited 9Jan.2025];3(01):1-. Available from: https://jurnal.balitbangda.lampungprov.go.id/index.php/jip/article/view/76