CHADDOCK, W. H. The Preparation of Saltpetre in the Southern Shan States, Burma. Indian Forester, [S. l.], v. 27, n. 12, p. 582–582, DOI: 10.36808/if/1901/v27i12/16031. Disponível em: http://indianforester.co.in/index.php/indianforester/article/view/16031. Acesso em: 4 dec. 2025.