“Assessment of the Particle Filtration Efficiency of N95 Masks Protecting Quarry Workers in Erongo, Otjozondjupa, and Kunene Regions of Namibia: DOI: Https: dx.doi.org 10.4314 ajhs.V38i1.5”. African Journal of Health Sciences, vol. 38, no. 1, Oct. 2025, https://ojs.ajhsjournal.or.ke/index.php/home/article/view/637.