Abdulaziz , B. Alharbi. “ASSESSMENT OF INDOOR PARTICULATE MATTER CONCENTRATION IN OFFICES: IMPACTS OF OCCUPANCY AND OUTDOOR PARTICULATES”. Advanced Journal of Environmental Sciences (AJES), vol. 1, no. 1, Mar. 2023, pp. 63-76, https://zapjournals.com/Journals/index.php/ajes/article/view/136.