Sultana, R., and J. Mustaquim. “?SOME PHYSICAL PARAMETERS OF THE SANDSPIT BACKWATERS, KARACHI COAST”. Biological Sciences - PJSIR, vol. 46, no. 5, Oct. 2003, pp. 333-4, https://v2.pjsir.org/index.php/biological-sciences/article/view/1667.