|Authors :||Geological Survey of Pennsylvania., Rogers, Henry D. (Henry Darwin), 1808-1866.|
|Title:||Annual report on the geological exploration of the state of Pennsylvania /|
Annual report on the geological exploration of the state of Pennsylvania / by Henry D. Rogers.
Geological Survey of Pennsylvania.Rogers, Henry D. (Henry Darwin), 1808-1866.
[Harrisburg: The Survey], 1838
|Publication Info:||Pittsburgh: University of Pittsburgh, Digital Research Library
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Mines and mineral resources--Pennsylvania--Periodicals.