Silapanuntakul, S., Intrarasaksit, P., Vatanasomboon, P., & Tantrakarnapa, K. (2017). Uptake of Copper and Zinc in Lettuce (Lactuca sativa L.) Planted in Sida Soil and Lignite Bottom Ash Mixtures. Asian Health, Science and Technology Reports, 25(3), 31–42. retrieved from https://ph03.tci-thaijo.org/index.php/ahstr/article/view/1705