CHOWDHARY, R. L. Estimation of Demand for Forest Recreation (Camping) a Conceptual Frame Work. Indian Forester, [S. l.], v. 103, n. 1, p. 2–22, 1977. DOI: 10.36808/if/1977/v103i1/11609. Disponível em: http://indianforester.co.in/index.php/indianforester/article/view/11609. Acesso em: 4 dec. 2025.