Azam, A, MM Rahman, M Samsuzzaman, MA Main, and MA Quddus. “Combined Effect of Sulphur and Boron on Yield and Yield Contributing Characters, Nutrient and Oil Content of Mustard”. Bangladesh Journal of Agricultural Research 42, no. 2 (June 7, 2017): 249–258. Accessed May 19, 2022. https://www.banglajol.info/index.php/BJAR/article/view/32812.