Ghosh RC, Singhal RM, Pathak TC. Comparative Determination of the Spectral Properties and Colloidal Behaviour of Humic Acids of Sal Forest Soils of Doon Valley Planted with <I>Eucalyptus</I>. Indian Forester [Internet]. 1977 Nov. 1 [cited 2025 Dec. 4];103(11):701-7. Available from: http://indianforester.co.in/index.php/indianforester/article/view/11821