Lopez-Carr, David, and Daniel Ervin. “Population-Health-Environment (PHE) Synergies Evidence from USAID-Sponsored Programs in African and Asian Core Conservation Areas”. European Journal of Geography 8, no. 3 (January 1, 2017). Accessed October 16, 2025. https://www.eurogeojournal.eu/index.php/egj/article/view/307.