PAYANUN, K. Evaluation of Demonstration and Training on Drip – Irrigation in Green Isarn Project. Kasetsart Journal of Social Sciences, [S. l.], v. 10, n. 2, p. 184–194, 1989. Disponível em: https://so04.tci-thaijo.org/index.php/kjss/article/view/243894. Acesso em: 16 sep. 2026.