Choudhury, A. T. A. and Khanif, Y. (2002) “EFFECT OF NITROGEN, COPPER AND MAGNESIUM FERTILIZATION ON YIELD AND NUTRITION OF RICE”, Biological Sciences - PJSIR, 45(2), pp. 102–107. Available at: http://www.biostaging.pjsir.org/index.php/biological-sciences/article/view/1763 (Accessed: 8 June 2025).