Das, Shaon Kumar, Goutam Kumar Ghosh, R. K. Avasthe, and Manik Chandra Kundu. “Preparation and Characterization of Biochars for Their Application As a Soil Amendment”. Indian Journal of Hill Farming 31, no. 1 (August 14, 2018). Accessed October 26, 2025. https://epubs.icar.org.in/index.php/IJHF/article/view/82361.