SINGH, Puran. The Cultivation of Drugs in Indian Forests. Indian Forester, [S. l.], v. 39, n. 3, p. 114–127, 1913. DOI: 10.36808/if/1913/v39i3/17626. Disponível em: http://indianforester.co.in/index.php/indianforester/article/view/17626. Acesso em: 4 dec. 2025.