Uddin, M., Rahman, K., Rahman, M., Alam, Z. and Salam, M. 2015. Effect of Phosphorus And Sulphur on Yield of Brri Dhan 57. Journal of Environmental Science and Natural Resources. 7, 1 (Feb. 2015), 7–11. DOI:https://doi.org/10.3329/jesnr.v7i1.22137.