KARMAKAR, S., MITTRA, B.N. and GHOSH, B.C. (2014) “Effect of paper-factory sludge on yield and nutrient uptake of rice (Oryza sativa)”, The Indian Journal of Agricultural Sciences, 71(11). Available at: https://epubs.icar.org.in/index.php/IJAgS/article/view/40428 (Accessed: 20 October 2025).