asisekharan, B. (1999). "Technology of Iron and Steel in Kodumanal"(PDF). Indian Journal of History of Science. 34 (4). Archived from the original (PDF) on 24 July 2015.
asisekharan, B. (1999). "Technology of Iron and Steel in Kodumanal"(PDF). Indian Journal of History of Science. 34 (4). Archived from the original (PDF) on 24 July 2015.