สุนทรพันธ์ ส.; สิงหบุตรา น. Effects of Insecticide Dieldrin and Herbicide 2} 4-D on Soil Microorganism Activities. Agriculture and Natural Resources, Bangkok, Thailand, v. 9, n. 1, p. 46–54, 1975. Disponível em: https://li01.tci-thaijo.org/index.php/anres/article/view/240710. Acesso em: 18 sep. 2026.