Krerkrit Phuphanphet และ worawat Sa-Ngiamvibool. (2021) Fertility Control System and pH Value for Hydroponics Cultivation. <i>Mahasarakham International Journal of Engineering Technology</i>, <i>7</i>(1), 23-29.Krerkrit Phuphanphet และ worawat Sa-Ngiamvibool. "Fertility Control System and pH Value for Hydroponics Cultivation". Mahasarakham International Journal of Engineering Technology 7 (2021):23-29.Krerkrit Phuphanphet และ worawat Sa-Ngiamvibool. Fertility Control System and pH Value for Hydroponics Cultivation. Faculty of Engineering Mahasasakham University:ม.ป.ท. 2021.