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.
<em>Naresuan University Journal: Science And Technology (NUJST), 25</em>(3), 31-42.
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