POPENOE, H. Soil conservation in Central America and Panama: current problems. Revista de Biología Tropical, [S. l.], v. 24, n. 1, p. 79–82, 1976. Disponível em: https://revistas.ucr.ac.cr/index.php/rbt/article/view/25918. Acesso em: 18 dec. 2024.