SINGHAL, R. M.; SONI, S. Spectral Properties and Colloidal Rehaviour of the Humic Acids of the Soils under Oak (<I>Quercus incana</I>), Dfodar (<I>Cedrus deodara</I>) and Chik (<I>Pinus roxburghii</I>) of Mussoorie Himalayas (U.P.). Indian Forester, [S. l.], v. 113, n. 10, p. 684–690, 1987. DOI: 10.36808/if/1987/v113i10/9466. Disponível em: https://indianforester.co.in/index.php/indianforester/article/view/9466. Acesso em: 9 jul. 2025.