Huynh, B., Nguyen, T. and Tran, V. 2021. THE CHANGE OF SANDY SOIL PROPERTIES AFTER ADDING CHARCOAL PRODUCED FROM A TRADITIONAL KILN IN THE MEKONG DELTA, VIET NAM. TRA VINH UNIVERSITY JOURNAL OF SCIENCE. 11, 42 (Feb. 2021), 109-115. DOI:https://doi.org/10.35382/18594816.1.42.2021.698.