Ghosh GK, Chattopadhyay GN, Chattopadhyay S. Availability and forms of sulphur in red and lateritic soils of Birbhum district of West Bengal*. Indian J Agri Sci. 2005;75(6). Accessed October 21, 2025. https://epubs.icar.org.in/index.php/IJAgS/article/view/9378