Kheoruenromne, I., Suddhiprakarn, A. and Kanghae, P. (1998) “Properties, Environment and Fertility Capability of Sandy Soils in Northeast Plateau, Thailand”, Agriculture and Natural Resources. Bangkok, Thailand, 32(3), pp. 355–373. available at: https://li01.tci-thaijo.org/index.php/anres/article/view/240585 (accessed: 17 September 2026).