Herrick, C. L. (1888). The geology of Licking County, Ohio. Part IV. The Subcarboniferous and Waverly groups. Bulletin of the Scientific Laboratories of Denison University. 3: 13-110.
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Herrick, C. L.
1888
The geology of Licking County, Ohio. Part IV. The Subcarboniferous and Waverly groups
Bulletin of the Scientific Laboratories of Denison University