“Determination of the Level of PCBs in Small Fishes from Three Different Coastal Areas of Karachi, Pakistan”, Pakistan Journal of Scientific & Industrial Research, vol. 48, no. 4, pp. 247–251, Aug. 2005, Accessed: Mar. 10, 2026. [Online]. Available: https://v2.pjsir.org/index.php/biological-sciences/article/view/1386