Online Books by
Warren L. Calvert
(Calvert, Warren L. (Warren Lytle))
Books from the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Calvert, Warren L. (Warren Lytle): Sauk sequence data sheets : compiled as of December 31, 1963 from logs and records of wells which penetrated the Sauk sequence of Ohio (State of Ohio, Division of Geological Survey, 1964), also by Ohio. Division of Geological Survey (page images at HathiTrust)- Calvert, Warren L. (Warren Lytle): Subsurface information catalog (State of Ohio, Division of Geological Survey., 1962), also by Ohio. Division of Geological Survey (page images at HathiTrust)
- Calvert, Warren L. (Warren Lytle): Subsurface information catalog, 1963-1967 (State of Ohio, Division of Geological Survey, 1969), also by Frederick B. Safford and Ohio. Division of Geological Survey (page images at HathiTrust)
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