Lestari, Dwi May, Tri Anggono Prijo, and Suryani Dyah Astuti. 2015. “OPTIMATION OF 48 KHz ULTRASONIC WAVE DOSE FOR THE INACTIVATION OF Salmonella Typhi”. Indonesian Journal of Tropical and Infectious Disease 5 (4):90-95. https://doi.org/10.20473/ijtid.v5i4.2006.