ELLEDGE, Emmett R.; TEETOR, Paul. The Economic Geology of the Arkansas City District / Clay and Shale Resources in the Vicinity of Arkansas City, Kansas. Bulletin (Kansas Geological Survey), [S. l.], n. 8, p. 1–47, 1921. Disponível em: https://journals.ku.edu/kgsbulletin/article/view/21828.. Acesso em: 2 jul. 2024.