Saima SHIHEPO; Roswitha MAHALIE; Omotayo AWOFOLU. The Implementation of the Hierarchical Hazard Control Model to Assess the Respiratory Protection of Quarry and Allied Workers in Namibia. Geography, Earth Science and Environment: Research Highlights Vol. 9, [S. l.], p. 200–218, 2025. DOI: 10.9734/bpi/geserh/v9/4943. Disponível em: https://stm.bookpi.org/GESERH-V9/article/view/17879. Acesso em: 13 jun. 2026.