“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”, AJHS, vol. 38, no. 1, Oct. 2025, Accessed: Nov. 12, 2025. [Online]. Available: https://ojs.ajhsjournal.or.ke/index.php/home/article/view/637