KUMAR, S. V.; RAGHAVAIAH, P. S. New Concepts in Bio-diversity Conservation, Publicity and Extension - Environmental Education Centre At Tirumala (Tirupati) - Use of Spiritual Theme - a Case Study. Indian Forester, [S. l.], v. 126, n. 1, p. 9–15, 2000. DOI: 10.36808/if/2000/v126i1/3125. Disponível em: http://indianforester.co.in/index.php/indianforester/article/view/3125. Acesso em: 4 dec. 2025.