SRIVICHA , N.; PINANGARM, P. Feasibility Study for Business Investment of Pig Farm in Nonghan District, UdonThani Province. Journal of Modern Learning Development, [S. l.], v. 6, n. 6, p. 118–131, 2021. Disponível em: https://so06.tci-thaijo.org/index.php/jomld/article/view/250457. Acesso em: 1 oct. 2026.