Dhanya Balakrishnan, A G Umadevi, Jose.P. Abraham, M. Rajagopalan, and J Jojo, trans. 2012. “A Study on Activity Concentration of Natural Radionuclide of Building Materials in Kochi”. International Journal of Fundamental Physical Sciences 2 (3): 41-43. https://doi.org/10.14331/ijfps.2012.330034.