Singh, S. and Srivastava, A.K. 2017. Variations in Hepatosomatic Index (HSI) and Gonadosomatic Index (GSI) in Fish <i>Heteropneustes fossilis</i> Exposed to Higher Sub-Lethal Concentration to Arsenic and Copper. Journal of Ecophysiology and Occupational Health. 15, 3-4 (May 2017), 89–93. DOI:https://doi.org/10.18311/jeoh/2015/14497.