“Main Synoptic Conditions over India and Neighbourhood During a Period of 40 Days before Onset of Monsoon 1979”. MAUSAM 31, no. 2 (April 1, 1980): 319–322. Accessed February 7, 2026. https://mausamjournal.imd.gov.in/index.php/MAUSAM/article/view/3873.