SINGH, R. V.; SINGH, Virendra. Preliminary Studies on the Quality of Spruce and Silver Fir Seed as affected by its Source. Indian Forester, [S. l.], v. 107, n. 9, p. 571–577, 1987. DOI: 10.36808/if/1981/v107i9/11075. Disponível em: http://indianforester.co.in/index.php/indianforester/article/view/11075. Acesso em: 4 dec. 2025.