B. Mandal, N. De, V.N. Mishra, S. Sharma and K.B. Polara, A.K. Pradhan, K.S. Beura R. Das, D. Padhan, G.C. Hazra. “Extractable Iron and Manganese in Soil As Influenced by Management Practices in Some Long-Term Experiments of India”. Journal of the Indian Society of Soil Science 66, no. 1 (June 16, 2018). Accessed July 16, 2026. https://epubs.icar.org.in/index.php/JISSS/article/view/80709.