G. Y. Syiar Ramadhan, D. Wahyudin, and A. . . Nurhayati, “ULTRASONIC WAVE FREQUENCY DIFFERENCES AGAINST FLY DENSITY REDUCTION THE CANTON PT. X: ULTRASONIC WAVE FREQUENCY DIFFERENCES AGAINST FLY DENSITY REDUCTION THE CANTON PT. X”, JSPI, vol. 4, no. 2, pp. 64–72, Dec. 2023.