Wyoming Stratigraphy. Part I. Subsurface Stratigraphy of the Pre-Niobrara Formations in Wyoming, 1956 (Wyoming Geological Association).
Burk, C. A. (Chairman), Geoge G. Anderman, Robert R. Berg, Glen L. Faulkner, C. J. Gudim, R. O. McCrae, Norman K. Mills, Marvin L. Peterson and Nomenclature Committee, Wyoming Geological Association.
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