SINGH, R. V.; KHAN, A. R. Economics of Chir Pine Seed Collection. Indian Forester, [S. l.], v. 103, n. 2, p. 106–111, 1977. DOI: 10.36808/if/1977/v103i2/11631. Disponível em: https://indianforester.co.in/index.php/indianforester/article/view/11631. Acesso em: 10 jul. 2025.