“Natural productivity of fish ponds in relation to physico-chemical parameters at Chilya hatcher Thatta, Sindh, Pakistan”, Sindh. Uni. Res. J. SS, vol. 39, no. 1, Jun. 2007, Accessed: Oct. 27, 2026. Available: https://sujo.usindh.edu.pk/index.php/SURJ/article/view/6709