Harlton, B H. (1933). Micropaleontology of the Pennsylvanian Johns Valley Shale of the Ouachita Mountains, Oklahoma, and Its Relationship to the Mississippian Caney Shale. Journal of Paleontology. 7 (1), 3-29.
208881
Harlton, B H
1933
Micropaleontology of the Pennsylvanian Johns Valley Shale of the Ouachita Mountains, Oklahoma, and Its Relationship to the Mississippian Caney Shale