Subba, Bharat Raj, and Bikash Khanal. “Histopathological Changes in the Gills of Some Fishes Inhabiting Polluted Singhiya River, Biratnagar, Nepal”. Nepalese Journal of Biosciences 2 (January 24, 2013): 113–117. Accessed March 28, 2024. https://nepjol.info/index.php/NJBS/article/view/7498.