Ahmad, Irshad, Saqib Ali, and M Rasool Ian. 2000. “?PHYSICO-CHEMICAL ANALYSIS OF FERTILIZER INDUSTRY EFFLUENT AND ITS EFFECTS ON CROP PLANTS”. Biological Sciences - PJSIR 43 (2):83-89. https://v2.pjsir.org/index.php/biological-sciences/article/view/1998.