ZUTSHI , P. K., and T. N. MAHADEVAN. “Monthly Average Sulphur Dioxide Concentrations in Bombay and Their Computational Transfer to One Hourly Averaging Period”. MAUSAM 26, no. 4 (October 1, 1975): 531–534. Accessed September 19, 2024. http://103.215.208.102/index.php/MAUSAM/article/view/2333.