GAJASENI, Jiragorn. Energy Value of Elephant Labour. Indian Forester, [S. l.], v. 119, n. 10, p. 804–806, 1993. DOI: 10.36808/if/1993/v119i10/8248. Disponível em: http://indianforester.co.in/index.php/indianforester/article/view/8248. Acesso em: 16 apr. 2026.