Kanyanat Soontornprasit;Niti Iamchuen;Dutrudi Panprommin;Siriluck Tuncharoen. (2020) Water quality and Assessment of Trophic State Using Chlorophyll a as Indicator: A Case Study of Upper and Middle Ing River. <i>Khon Kaen Agriculture Journal</i>, <i>48</i>(2), 271-282.Kanyanat Soontornprasit;Niti Iamchuen;Dutrudi Panprommin;Siriluck Tuncharoen. "Water quality and Assessment of Trophic State Using Chlorophyll a as Indicator: A Case Study of Upper and Middle Ing River". Khon Kaen Agriculture Journal 48 (2020):271-282.Kanyanat Soontornprasit;Niti Iamchuen;Dutrudi Panprommin;Siriluck Tuncharoen. Water quality and Assessment of Trophic State Using Chlorophyll a as Indicator: A Case Study of Upper and Middle Ing River. Faculty of Agriculture:ม.ป.ท. 2020.