Jaruwan ladorndoo และ Pramuk Osiri. (2015) Noise reduction of jewelry cleaning machine. Mahidol University:ม.ป.ท.Jaruwan ladorndoo และ Pramuk Osiri. 2015. Noise reduction of jewelry cleaning machine. ม.ป.ท.:Mahidol University;Jaruwan ladorndoo และ Pramuk Osiri. Noise reduction of jewelry cleaning machine. ม.ป.ท.:Mahidol University, 2015. Print.