GUPTA SD. MEASUREMENT AND ANALYSIS OF RADIO REFRACTIVE INDEX OVER KOLKATA WITH RESPECT TO ITS SEASONAL AND DIURNAL CHARACTERISTICS. MAUSAM [Internet]. 2008Jul.1 [cited 2023Dec.2];59(3):357-60. Available from: https://mausamjournal.imd.gov.in/index.php/MAUSAM/article/view/1267