Chailerd, J., Suksard, S., Hoamuangkaew, W., & Udomchoke, V. (2005). Evaluation of the Direct Use Value from Huai Thuem Watershed, Thong Pha Phum District, Kanchanaburi Province. Kasetsart Journal of Social Sciences, 26(2), 202–212. retrieved from https://so04.tci-thaijo.org/index.php/kjss/article/view/246263