Pesta, Bryan J., John G. R. Fuerst, and Emil Kirkegaard. “County-Level USA: No Robust Relationship Between Geoclimatic Variables and Cognitive Ability”. Journal of Geographical Research 4, no. 1 (February 7, 2021): 48–66. Accessed April 29, 2024. https://journals.bilpubgroup.com/index.php/jgr/article/view/2765.