khanitchaidecha, wilawan, Nakaruk, A., Mingmongkol, Y. ., Ratananikom, K. . and Channei, D. . (2021) “Effects of Aeration and Quantity of Effective Microorganisms (EM) Balls for Water Quality Restoration”, Naresuan University Engineering Journal. Phitsanulok, Thailand, 16(2), pp. 18–23. doi: 10.14456/nuej.2021.18.