LAL, Upendranath Kanji. A Convenient Formula for Surveyors. Indian Forester, [S. l.], v. 17, n. 12, p. 451–451, DOI: 10.36808/if/1891/v17i12/14648. Disponível em: https://indianforester.co.in/index.php/indianforester/article/view/14648. Acesso em: 21 feb. 2026.