Baars DL, Ross CA, Ritter SM, Maples CG. Proposed Repositioning of the Pennsylvanian-Permian Boundary in Kansas. kgsbulletin [Internet]. 2024 Apr. 16 [cited 2024 Jul. 3];(230):5-10. Available from: https://journals.ku.edu/kgsbulletin/article/view/20480