Azam, F., A. Lodhi, and M. H. Sajjad. “RESPONSE OF RICE TO NITROGENOUS FERTILIZER AND IRRADIATED SEWAGE SLUDGE”. Biological Sciences - PJSIR, vol. 46, no. 2, Apr. 2003, pp. 129-34, https://v2.pjsir.org/index.php/biological-sciences/article/view/1608.