Sunandana Mandal. “Macronutrient Status of Soils under Rice Growing Areas of Birbhum District, West Bengal, India”. Journal of the Indian Society of Soil Science 70, no. 2 (September 17, 2022). Accessed October 26, 2025. https://epubs.icar.org.in/index.php/JISSS/article/view/128136.