MEHR SINGH, S. Soil Conservation in Punjab through Voluntary Efforts and its Progress. Indian Forester, [S. l.], v. 74, n. 6, p. 237–240, 1948. DOI: 10.36808/if/1948/v74i6/23019. Disponível em: http://indianforester.co.in/index.php/indianforester/article/view/23019. Acesso em: 4 dec. 2025.