MARTIN, E. The ivory industry in Botswana. Pachyderm, [S. l.], v. 3, n. 1, p. 5–7, 1984. DOI: 10.69649/pachyderm.v3i1.574. Disponível em: https://pachydermjournal.org/index.php/pachyderm/article/view/574. Acesso em: 24 jun. 2026.