Pitchaya Intharit และ Chutharmard Kaewmano and Ashara Pengnoo. (2021) Yield of lettuce (Lactuca sativa L.) grown in different types of soil under organic soil amendment. <i>Khon Kaen Agriculture Journal</i>, <i>49</i>(4), 818-829.Pitchaya Intharit และ Chutharmard Kaewmano and Ashara Pengnoo. "Yield of lettuce (Lactuca sativa L.) grown in different types of soil under organic soil amendment". Khon Kaen Agriculture Journal 49 (2021):818-829.Pitchaya Intharit และ Chutharmard Kaewmano and Ashara Pengnoo. Yield of lettuce (Lactuca sativa L.) grown in different types of soil under organic soil amendment. Faculty of Agriculture:ม.ป.ท. 2021.