Singhal RM, 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 [Internet]. 1987 Oct. 1 [cited 2025 Jul. 9];113(10):684-90. Available from: https://indianforester.co.in/index.php/indianforester/article/view/9466