Singh A, Deep A, Pandey C, Nandan H. Comparative study of gaseous pollutants for major cities in foothills of Garhwal Himalaya of Uttarakhand. MAUSAM [Internet]. 2023Jan.1 [cited 2024Oct.5];74(1):57-72. Available from: http://103.215.208.102/index.php/MAUSAM/article/view/1013