Das, A.K., and S.L. Malurkar. “Kodaikanal Solar and Geomagnetic Data, January-March, 1952”. MAUSAM 3, no. 3 (July 1, 1952): 221–224. Accessed November 23, 2024. http://103.215.208.102/index.php/MAUSAM/article/view/4756.