Nitinattrakul N, Lalitaporn P. Study the change in air pollution after the COVID-19 outbreak in Thailand. Eng Appl Sci Res [Internet]. 2023 Mar. 28 [cited 2024 May 12];50(2):137-48. Available from: https://ph01.tci-thaijo.org/index.php/easr/article/view/250933