Siti Zarina Mohd Muji, Zarina Tukiran. ELECTRICAL & ELECTRONIC ENGINEERING: THEORY AND APPLICATIONS SERIES 2: ULTRASONIC AND APPLICATION [Internet]. Penerbit UTHM; 2015 [cited 2024 Jul. 18]. Available from: https://penerbit.uthm.edu.my/omp/index.php/penerbituthm/catalog/book/143