Calhoun, Nicole, and Dipti Sharma. “Human Activities Can Affect Human Lungs and Breathing? (Matter of Public Health)”. European Journal of Applied Sciences 9, no. 3 (June 22, 2021): 523–535. Accessed November 21, 2024. https://journals.scholarpublishing.org/index.php/AIVP/article/view/10327.