Online Books by
Theodore A. Ehlke
Books from the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Ehlke, Theodore A.: Hydrology of area 10, Eastern Coal Province, West Virginia / (Charleston, W. Va. : U.S. Dept. of the Interior, Geological Survey, 1983), also by Geological Survey (U.S.) (page images at HathiTrust)- Ehlke, Theodore A.: Hydrology of area 12, Eastern Coal Province, West Virginia / (Charleston, W. Va. : U.S. Dept. of the Interior, Geological Survey, [1982]), also by Geological Survey (U.S.) (page images at HathiTrust)
- Ehlke, Theodore A.: Hydrology of area 9, Eastern Coal Province, West Virginia / (Charleston, W. Va. : U.S. Dept. of the Interior, Geological Survey, [1982]), also by Sanford C. Downs, Gerald S. Runner, and Geological Survey (U.S.) (page images at HathiTrust)
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