Troell, A.R. (1969) “Depositional Facies of Toronto Limestone Member (Oread Limestone, Pennsylvanian), Subsurface Marker Unit in Kansas”, Bulletin (Kansas Geological Survey), (197), pp. 1–29. Available at: https://journals.ku.edu/kgsbulletin/article/view/22222 (Accessed: 3 November 2024).