Mausam, Editor. “KODAIKANAL SOLAR, GEOMAGNETIC AND IONOSPHERIC DATA (JULY - SEPTEMBER 1958)”. MAUSAM 10, no. 1 (January 1, 1959): 93–102. Accessed May 27, 2024. https://mausamjournal.imd.gov.in/index.php/MAUSAM/article/view/4035.